Start from the strong status-quo anchor that KASA currently targets late October 2026, then weight the probability that the late-August launch management committee or new technical reports shift the official target out of October; sub-question probabilities are blended via weighted average since all reflect the same underlying schedule risk.
## Cross-Market Signals ### Polymarket - "US announces end of Iranian blockade by August 15, 2026?" → Yes: 0.01, Volume: $3.0M - "US announces end of Iranian blockade by August 31, 2026?" → Yes: 0.20, Volume: $1.6M - "US announces end of Iranian blockade by August 22, 2026?" → Yes: 0.13, Volume: $468.8K - "Will Elon Musk post 40-64 tweets from August 13 to August 15, 2026?" → Yes: 0.80, Volume: $137.2K - "Will Elon Musk post 90-114 tweets from August 13 to August 15, 2026?" → Yes: 0.00, Volume: $117.6K - "Will the Doge-1 Lunar Mission launch by December 31, 2026?" → Yes: 0.04, Volume: $932.1K - "US-Iran Final Nuclear Deal by August 18, 2026?" → Yes: 0.00, Volume: $2.6M - "Will Elon Musk post 65-89 tweets from August 13 to August 15, 2026?" → Yes: 0.20, Volume: $91.3K - "Will Shakhtar Donetsk win the 2026-27 UEFA Champions League Championship?" → Yes: 0.00, Volume: $5.3M - "Will the Fed increase interest rates by 50+ bps after the September 2026 meeting?" → Yes: 0.00, Volume: $5.3M
1. [sq1 | web_search | STRONG cred 90 | DOWN | RECENT] KASA and KAIST postponed the fifth Nuri launch to October 2026 to replace and test underperforming nanosatellite thrusters, per August 2, 2026 reporting. 2. [sq1 | web_search | MODERATE cred 80 | DOWN | RECENT] KASA official Kim Jin-hee said thruster performance shortfalls have been addressed and 'necessary improvements' completed to enhance stability. 3. [sq1 | web_search | STRONG cred 92 | DOWN | RECENT] KASA Administrator Oh Tae-seok stated on July 31, 2026 that the Nuri relaunch would occur 'by late October.' 4. [sq1 | web_search | MODERATE cred 85 | NEUTRAL | RECENT] KASA plans to convene the Nuri Launch Management Committee in late August 2026 to finalize the specific launch date. 5. [sq1 | web_search | MODERATE cred 88 | NEUTRAL | DATED] For the 4th Nuri launch, the launch management committee set a specific date (Nov 27, 2025) roughly a month ahead with backup dates through Dec 4. 6. [sq2 | web_search | STRONG cred 85 | UP | RECENT] The fifth Nuri launch has already slipped repeatedly, from an original June 2026 target through August and September to October 2026. 7. [sq2 | web_search | WEAK cred 45 | DOWN | VERY_RECENT] A mid-August 2026 secondary report (BigGo Finance) says the launch is now most likely in late October rather than an earlier October window. 8. [sq2 | web_search | MODERATE cred 65 | NEUTRAL | VERY_RECENT] No credible report found through mid-August 2026 indicating the fifth Nuri launch has slipped beyond October 2026. 9. [sq3 | article_search | WEAK cred 50 | NEUTRAL | VERY_RECENT] Article searches for August 7–31, 2026 surfaced no new reports of Nuri launch-vehicle, payload, or range technical problems. 10. [sq3 | web_search | MODERATE cred 75 | NEUTRAL | RECENT] Chuseok holiday in late September 2026 was cited as a scheduling constraint pushing the launch into October. 11. [sq3 | article_search | WEAK cred 90 | NEUTRAL | VERY_RECENT] A Chinese Long March 7A failed on August 11, 2026, and Blue Origin's New Glenn exploded in May 2026, illustrating industry-wide launch schedule volatility. 12. [sq1 | web_search | MODERATE cred 78 | DOWN | RECENT] The nanosatellite thruster issue affects payloads (KAIST cluster), not the Nuri launch vehicle itself, and remediation was described as complete. ## Cross-Market Signals ### Polymarket - "US announces end of Iranian blockade by August 15, 2026?" → Yes: 0.01, Volume: $3.0M - "US announces end of Iranian blockade by August 31, 2026?" → Yes: 0.20, Volume: $1.6M - "US announces end of Iranian blockade by August 22, 2026?" → Yes: 0.13, Volume: $468.8K - "Will Elon Musk post 40-64 tweets from August 13 to August 15, 2026?" → Yes: 0.80, Volume: $137.2K - "Will Elon Musk post 90-114 tweets from August 13 to August 15, 2026?" → Yes: 0.00, Volume: $117.6K - "Will the Doge-1 Lunar Mission launch by December 31, 2026?" → Yes: 0.04, Volume: $932.1K - "US-Iran Final Nuclear Deal by August 18, 2026?" → Yes: 0.00, Volume: $2.6M - "Will Elon Musk post 65-89 tweets from August 13 to August 15, 2026?" → Yes: 0.20, Volume: $91.3K - "Will Shakhtar Donetsk win the 2026-27 UEFA Champions League Championship?" → Yes: 0.00, Volume: $5.3M - "Will the Fed increase interest rates by 50+ bps after the September 2026 meeting?" → Yes: 0.00, Volume: $5.3M Information gaps: - No direct reporting on the outcome of the late-August 2026 launch management committee meeting - No base rate for how often KASA/KARI slips a target month within ~2 months of launch - No Korean-language Yonhap/KASA press releases dated after Aug 15, 2026 - Unknown whether backup dates would extend into November Key uncertainties: - Whether the August committee meeting sets a firm October date or defers - Whether thruster retest results confirm satisfactory performance - Possibility of newly discovered launch-vehicle or range issues before Aug 31 - Whether an announced window straddles late October into early November
You are an elite superforecaster using Tetlock-style Fermi decomposition. Estimate each sub-question INDEPENDENTLY, then provide a holistic estimate. The pipeline will mathematically recombine the sub-question estimates — your job is to give the most accurate per-component probabilities.
## Question
Will the officially targeted launch month of the Nuri rocket be something other than October 2026, as of August 31, 2026?
## Description / Resolution Criteria
## Description
Korea JoongAng Daily (August 2, 2026): [Fifth Nuri rocket launch delayed to October over satellite thruster tests](https://www.koreajoongangdaily.com/korea/fifth-nuri-rocket-launch-delayed-to-october-over-satellite-thruster-tests/12803873)
> The fifth launch of Korea's homegrown Nuri rocket has been postponed until October due to problems with thrusters on nanosatellites to be carried aboard the vehicle, officials said Sunday.
> According to the Korea AeroSpace Administration (KASA) and the KAIST Satellite Technology Research Center, the launch was delayed from its original schedule to allow time to replace and test underperforming thrusters on some nanosatellite payloads.
> Thrusters provide the propulsion needed for satellites to adjust or maintain their orbits and are key components for nanosatellites that fly in formation while maintaining fixed intervals.
> The final launch date will be determined at a launch management committee meeting scheduled for late August, he added.
`{"format": "metac_reveal_and_close_in_period", "info": {"post_id": 45089, "question_id": 45239}}`
## Resolution Criteria
This question resolves as **No** if, according to [credible sources](https://www.metaculus.com/faq/#definitions), as of August 31, 2026 a body with the authority to do so, such as the [Korea AeroSpace Administration](https://www.kasa.go.kr/), is currently targeting the fifth [launch](https://en.wikipedia.org/wiki/Nuri_\(rocket\)#Launches) of the Nuri rocket to occur in October 2026.
## Fine Print
As of August 6, 2026, the most recent credible [report](https://www.yna.co.kr/view/AKR20260731129400017) by the Yonhap News Agency quotes KASA Administrator Oh Tae-seok stating that the relaunch of the rocket would be (via Google Translate) "by late October." Thus, a question closing on August 6, 2026 would resolve as **No**. 
***
This question's information (resolution criteria, fine print, background info, etc) is synced with an [original identical question](https://www.metaculus.com/questions/45089) which opened on 2026-08-07 12:00:00. This question will resolve based on the resolution criteria and fine print of the linked original question. However, if this question would resolve differently than the original question, then this question will be annulled. Additionally, if the original question's resolution could have been known before this question opened, then this question will be annulled.
## Sub-question decomposition
- (w=0.45) Will the late-August 2026 Nuri launch management committee (or KASA) announce a specific launch date that falls within October 2026? — The committee scheduled for late August is the designated body to fix the final date; if it confirms an October date, th
- (w=0.35) Will any credible report before August 31, 2026 indicate the fifth Nuri launch has slipped beyond October 2026 (e.g., to November/December 2026 or 2027)? — Direct path to YES resolution — a further announced slip past October.
- (w=0.20) Will new technical problems (nanosatellite thrusters, launch vehicle, or range issues) be reported between August 7 and August 31, 2026 that jeopardize the October window? — Emergent technical trouble is the main causal driver that would push the target out of October; Nuri has a history of sh
Combination rule: **weighted_average**
## Synthesized evidence
1. [sq1 | web_search | STRONG cred 90 | DOWN | RECENT] KASA and KAIST postponed the fifth Nuri launch to October 2026 to replace and test underperforming nanosatellite thrusters, per August 2, 2026 reporting.
2. [sq1 | web_search | MODERATE cred 80 | DOWN | RECENT] KASA official Kim Jin-hee said thruster performance shortfalls have been addressed and 'necessary improvements' completed to enhance stability.
3. [sq1 | web_search | STRONG cred 92 | DOWN | RECENT] KASA Administrator Oh Tae-seok stated on July 31, 2026 that the Nuri relaunch would occur 'by late October.'
4. [sq1 | web_search | MODERATE cred 85 | NEUTRAL | RECENT] KASA plans to convene the Nuri Launch Management Committee in late August 2026 to finalize the specific launch date.
5. [sq1 | web_search | MODERATE cred 88 | NEUTRAL | DATED] For the 4th Nuri launch, the launch management committee set a specific date (Nov 27, 2025) roughly a month ahead with backup dates through Dec 4.
6. [sq2 | web_search | STRONG cred 85 | UP | RECENT] The fifth Nuri launch has already slipped repeatedly, from an original June 2026 target through August and September to October 2026.
7. [sq2 | web_search | WEAK cred 45 | DOWN | VERY_RECENT] A mid-August 2026 secondary report (BigGo Finance) says the launch is now most likely in late October rather than an earlier October window.
8. [sq2 | web_search | MODERATE cred 65 | NEUTRAL | VERY_RECENT] No credible report found through mid-August 2026 indicating the fifth Nuri launch has slipped beyond October 2026.
9. [sq3 | article_search | WEAK cred 50 | NEUTRAL | VERY_RECENT] Article searches for August 7–31, 2026 surfaced no new reports of Nuri launch-vehicle, payload, or range technical problems.
10. [sq3 | web_search | MODERATE cred 75 | NEUTRAL | RECENT] Chuseok holiday in late September 2026 was cited as a scheduling constraint pushing the launch into October.
11. [sq3 | article_search | WEAK cred 90 | NEUTRAL | VERY_RECENT] A Chinese Long March 7A failed on August 11, 2026, and Blue Origin's New Glenn exploded in May 2026, illustrating industry-wide launch schedule volatility.
12. [sq1 | web_search | MODERATE cred 78 | DOWN | RECENT] The nanosatellite thruster issue affects payloads (KAIST cluster), not the Nuri launch vehicle itself, and remediation was described as complete.
## Cross-Market Signals
### Polymarket
- "US announces end of Iranian blockade by August 15, 2026?" → Yes: 0.01, Volume: $3.0M
- "US announces end of Iranian blockade by August 31, 2026?" → Yes: 0.20, Volume: $1.6M
- "US announces end of Iranian blockade by August 22, 2026?" → Yes: 0.13, Volume: $468.8K
- "Will Elon Musk post 40-64 tweets from August 13 to August 15, 2026?" → Yes: 0.80, Volume: $137.2K
- "Will Elon Musk post 90-114 tweets from August 13 to August 15, 2026?" → Yes: 0.00, Volume: $117.6K
- "Will the Doge-1 Lunar Mission launch by December 31, 2026?" → Yes: 0.04, Volume: $932.1K
- "US-Iran Final Nuclear Deal by August 18, 2026?" → Yes: 0.00, Volume: $2.6M
- "Will Elon Musk post 65-89 tweets from August 13 to August 15, 2026?" → Yes: 0.20, Volume: $91.3K
- "Will Shakhtar Donetsk win the 2026-27 UEFA Champions League Championship?" → Yes: 0.00, Volume: $5.3M
- "Will the Fed increase interest rates by 50+ bps after the September 2026 meeting?" → Yes: 0.00, Volume: $5.3M
Information gaps:
- No direct reporting on the outcome of the late-August 2026 launch management committee meeting
- No base rate for how often KASA/KARI slips a target month within ~2 months of launch
- No Korean-language Yonhap/KASA press releases dated after Aug 15, 2026
- Unknown whether backup dates would extend into November
Key uncertainties:
- Whether the August committee meeting sets a firm October date or defers
- Whether thruster retest results confirm satisfactory performance
- Possibility of newly discovered launch-vehicle or range issues before Aug 31
- Whether an announced window straddles late October into early November
## Required pre-forecast walkthrough
Before giving probabilities, walk through these explicitly:
(a) The time left until the question resolves.
(b) The status quo outcome — what happens if nothing changes from today.
(c) A brief scenario that results in NO.
(d) A brief scenario that results in YES.
## Calibration guidance
- **Estimate each sub-question in isolation.** Do not let your answer to one sub-question anchor your answer to another. This is the core of Fermi decomposition — independence forces more careful reasoning per factor.
- **Anchor on the status quo.** Require strong specific evidence to move far from it.
- 0.05 / 0.95 require strong, multi-source evidence. Avoid >0.97 or <0.03 unless the outcome is already settled or near-tautological — overconfident misses are punished heavily by the log score.
- **Anchor on prediction markets.** If liquid market prices (Polymarket / Kalshi) or a community forecast appear in the evidence, treat them as a strong, well-calibrated prior. Your final estimate should rarely sit more than ~15 percentage points from a liquid market on the SAME question — move further only with specific evidence the market lacks.
- **Treat research as fallible, not ground truth.** A single-source or "very recent" claim — especially one the evidence flags as unverified, possibly AI-generated, or low-credibility — must not drive you to near-certainty. When a load-bearing fact is unverified, keep at least 10-15% on the chance it is wrong.
- **Also provide a holistic estimate** — your overall gut feeling about the main question, BEFORE you see the mathematical combination. This serves as a sanity check: if the Fermi result and holistic estimate diverge wildly, something is wrong.
## Output
Return ONLY valid JSON, no markdown fences:
{
"rationale": "<address (a) (b) (c) (d) above — 5-8 sentences total>",
"sub_question_estimates": {
"sq1": <float in [0.01, 0.99]>,
"sq2": <float in [0.01, 0.99]>,
"sq3": <float in [0.01, 0.99]>
},
"holistic_p_yes": <float in [0.01, 0.99] — your overall estimate ignoring the decomposition>,
"what_would_change_my_mind": "<1-2 sentences: what new info would push you above 70% or below 30%>"
}
{
"forecast": {
"combination_logic": "weighted_average",
"evidence_brief": "1. [sq1 | web_search | STRONG cred 90 | DOWN | RECENT] KASA and KAIST postponed the fifth Nuri launch to October 2026 to replace and test underperforming nanosatellite thrusters, per August 2, 2026 reporting.\n2. [sq1 | web_search | MODERATE cred 80 | DOWN | RECENT] KASA official Kim Jin-hee said thruster performance shortfalls have been addressed and \u0027necessary improvements\u0027 completed to enhance stability.\n3. [sq1 | web_search | STRONG cred 92 | DOWN | RECENT] KASA Administrator Oh Tae-seok stated on July 31, 2026 that the Nuri relaunch would occur \u0027by late October.\u0027\n4. [sq1 | web_search | MODERATE cred 85 | NEUTRAL | RECENT] KASA plans to convene the Nuri Launch Management Committee in late August 2026 to finalize the specific launch date.\n5. [sq1 | web_search | MODERATE cred 88 | NEUTRAL | DATED] For the 4th Nuri launch, the launch management committee set a specific date (Nov 27, 2025) roughly a month ahead with backup dates through Dec 4.\n6. [sq2 | web_search | STRONG cred 85 | UP | RECENT] The fifth Nuri launch has already slipped repeatedly, from an original June 2026 target through August and September to October 2026.\n7. [sq2 | web_search | WEAK cred 45 | DOWN | VERY_RECENT] A mid-August 2026 secondary report (BigGo Finance) says the launch is now most likely in late October rather than an earlier October window.\n8. [sq2 | web_search | MODERATE cred 65 | NEUTRAL | VERY_RECENT] No credible report found through mid-August 2026 indicating the fifth Nuri launch has slipped beyond October 2026.\n9. [sq3 | article_search | WEAK cred 50 | NEUTRAL | VERY_RECENT] Article searches for August 7\u201331, 2026 surfaced no new reports of Nuri launch-vehicle, payload, or range technical problems.\n10. [sq3 | web_search | MODERATE cred 75 | NEUTRAL | RECENT] Chuseok holiday in late September 2026 was cited as a scheduling constraint pushing the launch into October.\n11. [sq3 | article_search | WEAK cred 90 | NEUTRAL | VERY_RECENT] A Chinese Long March 7A failed on August 11, 2026, and Blue Origin\u0027s New Glenn exploded in May 2026, illustrating industry-wide launch schedule volatility.\n12. [sq1 | web_search | MODERATE cred 78 | DOWN | RECENT] The nanosatellite thruster issue affects payloads (KAIST cluster), not the Nuri launch vehicle itself, and remediation was described as complete.\n\n## Cross-Market Signals\n\n### Polymarket\n- \"US announces end of Iranian blockade by August 15, 2026?\" \u2192 Yes: 0.01, Volume: $3.0M\n- \"US announces end of Iranian blockade by August 31, 2026?\" \u2192 Yes: 0.20, Volume: $1.6M\n- \"US announces end of Iranian blockade by August 22, 2026?\" \u2192 Yes: 0.13, Volume: $468.8K\n- \"Will Elon Musk post 40-64 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.80, Volume: $137.2K\n- \"Will Elon Musk post 90-114 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.00, Volume: $117.6K\n- \"Will the Doge-1 Lunar Mission launch by December 31, 2026?\" \u2192 Yes: 0.04, Volume: $932.1K\n- \"US-Iran Final Nuclear Deal by August 18, 2026?\" \u2192 Yes: 0.00, Volume: $2.6M\n- \"Will Elon Musk post 65-89 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.20, Volume: $91.3K\n- \"Will Shakhtar Donetsk win the 2026-27 UEFA Champions League Championship?\" \u2192 Yes: 0.00, Volume: $5.3M\n- \"Will the Fed increase interest rates by 50+ bps after the September 2026 meeting?\" \u2192 Yes: 0.00, Volume: $5.3M\n\nInformation gaps:\n - No direct reporting on the outcome of the late-August 2026 launch management committee meeting\n - No base rate for how often KASA/KARI slips a target month within ~2 months of launch\n - No Korean-language Yonhap/KASA press releases dated after Aug 15, 2026\n - Unknown whether backup dates would extend into November\n\nKey uncertainties:\n - Whether the August committee meeting sets a firm October date or defers\n - Whether thruster retest results confirm satisfactory performance\n - Possibility of newly discovered launch-vehicle or range issues before Aug 31\n - Whether an announced window straddles late October into early November",
"forecast_prompt": "You are an elite superforecaster using Tetlock-style Fermi decomposition. Estimate each sub-question INDEPENDENTLY, then provide a holistic estimate. The pipeline will mathematically recombine the sub-question estimates \u2014 your job is to give the most accurate per-component probabilities.\n\n## Question\nWill the officially targeted launch month of the Nuri rocket be something other than October 2026, as of August 31, 2026?\n\n## Description / Resolution Criteria\n## Description\nKorea JoongAng Daily (August 2, 2026): [Fifth Nuri rocket launch delayed to October over satellite thruster tests](https://www.koreajoongangdaily.com/korea/fifth-nuri-rocket-launch-delayed-to-october-over-satellite-thruster-tests/12803873)\n\n\u003e The fifth launch of Korea\u0027s homegrown Nuri rocket has been postponed until October due to problems with thrusters on nanosatellites to be carried aboard the vehicle, officials said Sunday.\n\n\u003e According to the Korea AeroSpace Administration (KASA) and the KAIST Satellite Technology Research Center, the launch was delayed from its original schedule to allow time to replace and test underperforming thrusters on some nanosatellite payloads.\n\n\u003e Thrusters provide the propulsion needed for satellites to adjust or maintain their orbits and are key components for nanosatellites that fly in formation while maintaining fixed intervals.\n\n\u003e The final launch date will be determined at a launch management committee meeting scheduled for late August, he added.\n\n`{\"format\": \"metac_reveal_and_close_in_period\", \"info\": {\"post_id\": 45089, \"question_id\": 45239}}`\n\n## Resolution Criteria\nThis question resolves as **No** if, according to [credible sources](https://www.metaculus.com/faq/#definitions), as of August 31, 2026 a body with the authority to do so, such as the [Korea AeroSpace Administration](https://www.kasa.go.kr/), is currently targeting the fifth [launch](https://en.wikipedia.org/wiki/Nuri_\\(rocket\\)#Launches) of the Nuri rocket to occur in October 2026.\n\n## Fine Print\nAs of August 6, 2026, the most recent credible [report](https://www.yna.co.kr/view/AKR20260731129400017) by the Yonhap News Agency quotes KASA Administrator Oh Tae-seok stating that the relaunch of the rocket would be (via Google Translate) \"by late October.\" Thus, a question closing on August 6, 2026 would resolve as **No**.\u0026#x20;\n\n***\nThis question\u0027s information (resolution criteria, fine print, background info, etc) is synced with an [original identical question](https://www.metaculus.com/questions/45089) which opened on 2026-08-07 12:00:00. This question will resolve based on the resolution criteria and fine print of the linked original question. However, if this question would resolve differently than the original question, then this question will be annulled. Additionally, if the original question\u0027s resolution could have been known before this question opened, then this question will be annulled.\n\n## Sub-question decomposition\n- (w=0.45) Will the late-August 2026 Nuri launch management committee (or KASA) announce a specific launch date that falls within October 2026? \u2014 The committee scheduled for late August is the designated body to fix the final date; if it confirms an October date, th\n- (w=0.35) Will any credible report before August 31, 2026 indicate the fifth Nuri launch has slipped beyond October 2026 (e.g., to November/December 2026 or 2027)? \u2014 Direct path to YES resolution \u2014 a further announced slip past October.\n- (w=0.20) Will new technical problems (nanosatellite thrusters, launch vehicle, or range issues) be reported between August 7 and August 31, 2026 that jeopardize the October window? \u2014 Emergent technical trouble is the main causal driver that would push the target out of October; Nuri has a history of sh\n\nCombination rule: **weighted_average**\n\n## Synthesized evidence\n1. [sq1 | web_search | STRONG cred 90 | DOWN | RECENT] KASA and KAIST postponed the fifth Nuri launch to October 2026 to replace and test underperforming nanosatellite thrusters, per August 2, 2026 reporting.\n2. [sq1 | web_search | MODERATE cred 80 | DOWN | RECENT] KASA official Kim Jin-hee said thruster performance shortfalls have been addressed and \u0027necessary improvements\u0027 completed to enhance stability.\n3. [sq1 | web_search | STRONG cred 92 | DOWN | RECENT] KASA Administrator Oh Tae-seok stated on July 31, 2026 that the Nuri relaunch would occur \u0027by late October.\u0027\n4. [sq1 | web_search | MODERATE cred 85 | NEUTRAL | RECENT] KASA plans to convene the Nuri Launch Management Committee in late August 2026 to finalize the specific launch date.\n5. [sq1 | web_search | MODERATE cred 88 | NEUTRAL | DATED] For the 4th Nuri launch, the launch management committee set a specific date (Nov 27, 2025) roughly a month ahead with backup dates through Dec 4.\n6. [sq2 | web_search | STRONG cred 85 | UP | RECENT] The fifth Nuri launch has already slipped repeatedly, from an original June 2026 target through August and September to October 2026.\n7. [sq2 | web_search | WEAK cred 45 | DOWN | VERY_RECENT] A mid-August 2026 secondary report (BigGo Finance) says the launch is now most likely in late October rather than an earlier October window.\n8. [sq2 | web_search | MODERATE cred 65 | NEUTRAL | VERY_RECENT] No credible report found through mid-August 2026 indicating the fifth Nuri launch has slipped beyond October 2026.\n9. [sq3 | article_search | WEAK cred 50 | NEUTRAL | VERY_RECENT] Article searches for August 7\u201331, 2026 surfaced no new reports of Nuri launch-vehicle, payload, or range technical problems.\n10. [sq3 | web_search | MODERATE cred 75 | NEUTRAL | RECENT] Chuseok holiday in late September 2026 was cited as a scheduling constraint pushing the launch into October.\n11. [sq3 | article_search | WEAK cred 90 | NEUTRAL | VERY_RECENT] A Chinese Long March 7A failed on August 11, 2026, and Blue Origin\u0027s New Glenn exploded in May 2026, illustrating industry-wide launch schedule volatility.\n12. [sq1 | web_search | MODERATE cred 78 | DOWN | RECENT] The nanosatellite thruster issue affects payloads (KAIST cluster), not the Nuri launch vehicle itself, and remediation was described as complete.\n\n## Cross-Market Signals\n\n### Polymarket\n- \"US announces end of Iranian blockade by August 15, 2026?\" \u2192 Yes: 0.01, Volume: $3.0M\n- \"US announces end of Iranian blockade by August 31, 2026?\" \u2192 Yes: 0.20, Volume: $1.6M\n- \"US announces end of Iranian blockade by August 22, 2026?\" \u2192 Yes: 0.13, Volume: $468.8K\n- \"Will Elon Musk post 40-64 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.80, Volume: $137.2K\n- \"Will Elon Musk post 90-114 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.00, Volume: $117.6K\n- \"Will the Doge-1 Lunar Mission launch by December 31, 2026?\" \u2192 Yes: 0.04, Volume: $932.1K\n- \"US-Iran Final Nuclear Deal by August 18, 2026?\" \u2192 Yes: 0.00, Volume: $2.6M\n- \"Will Elon Musk post 65-89 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.20, Volume: $91.3K\n- \"Will Shakhtar Donetsk win the 2026-27 UEFA Champions League Championship?\" \u2192 Yes: 0.00, Volume: $5.3M\n- \"Will the Fed increase interest rates by 50+ bps after the September 2026 meeting?\" \u2192 Yes: 0.00, Volume: $5.3M\n\nInformation gaps:\n - No direct reporting on the outcome of the late-August 2026 launch management committee meeting\n - No base rate for how often KASA/KARI slips a target month within ~2 months of launch\n - No Korean-language Yonhap/KASA press releases dated after Aug 15, 2026\n - Unknown whether backup dates would extend into November\n\nKey uncertainties:\n - Whether the August committee meeting sets a firm October date or defers\n - Whether thruster retest results confirm satisfactory performance\n - Possibility of newly discovered launch-vehicle or range issues before Aug 31\n - Whether an announced window straddles late October into early November\n\n## Required pre-forecast walkthrough\n\nBefore giving probabilities, walk through these explicitly:\n (a) The time left until the question resolves.\n (b) The status quo outcome \u2014 what happens if nothing changes from today.\n (c) A brief scenario that results in NO.\n (d) A brief scenario that results in YES.\n\n## Calibration guidance\n\n- **Estimate each sub-question in isolation.** Do not let your answer to one sub-question anchor your answer to another. This is the core of Fermi decomposition \u2014 independence forces more careful reasoning per factor.\n- **Anchor on the status quo.** Require strong specific evidence to move far from it.\n- 0.05 / 0.95 require strong, multi-source evidence. Avoid \u003e0.97 or \u003c0.03 unless the outcome is already settled or near-tautological \u2014 overconfident misses are punished heavily by the log score.\n- **Anchor on prediction markets.** If liquid market prices (Polymarket / Kalshi) or a community forecast appear in the evidence, treat them as a strong, well-calibrated prior. Your final estimate should rarely sit more than ~15 percentage points from a liquid market on the SAME question \u2014 move further only with specific evidence the market lacks.\n- **Treat research as fallible, not ground truth.** A single-source or \"very recent\" claim \u2014 especially one the evidence flags as unverified, possibly AI-generated, or low-credibility \u2014 must not drive you to near-certainty. When a load-bearing fact is unverified, keep at least 10-15% on the chance it is wrong.\n- **Also provide a holistic estimate** \u2014 your overall gut feeling about the main question, BEFORE you see the mathematical combination. This serves as a sanity check: if the Fermi result and holistic estimate diverge wildly, something is wrong.\n\n## Output\n\nReturn ONLY valid JSON, no markdown fences:\n\n{\n \"rationale\": \"\u003caddress (a) (b) (c) (d) above \u2014 5-8 sentences total\u003e\",\n \"sub_question_estimates\": {\n \"sq1\": \u003cfloat in [0.01, 0.99]\u003e,\n \"sq2\": \u003cfloat in [0.01, 0.99]\u003e,\n \"sq3\": \u003cfloat in [0.01, 0.99]\u003e\n },\n \"holistic_p_yes\": \u003cfloat in [0.01, 0.99] \u2014 your overall estimate ignoring the decomposition\u003e,\n \"what_would_change_my_mind\": \"\u003c1-2 sentences: what new info would push you above 70% or below 30%\u003e\"\n}\n",
"holistic_p_yes": 0.11,
"models": [
"opus",
"secondary"
],
"p_yes": 0.3246,
"rationale": "(a) Only ~3 weeks between question open (Aug 7) and resolution date (Aug 31), a very short window for a further slip announcement. (b) Status quo: KASA and KAIST have publicly committed to October 2026 (\u0027by late October\u0027 per Administrator Oh Tae-seok on July 31), with a launch management committee due in late August to fix a specific date; if nothing changes, the target remains October and the question resolves NO. (c) NO scenario: the late-August committee meets and confirms a specific October date (e.g., late October with backups), consistent with the 4th launch precedent of setting a date ~1 month out; alternatively the committee simply reaffirms October without a precise day \u2014 still NO. (d) YES scenario: thruster retests on the KAIST nanosatellite cluster fail again, or a new launch-vehicle/range issue emerges, prompting KASA to announce a November/December slip before Aug 31; or the committee sets a window that straddles into November and is characterized as a non-October target. Evidence points to the payload issue being remediated (\u0027necessary improvements completed\u0027), and the problem lies with payloads not the vehicle, which reduces the chance of a vehicle-driven delay. However, this launch has already slipped from June through August/September to October, so the base rate of further slippage is non-trivial \u2014 but a slip announced specifically within the narrow Aug 7\u201331 window is less likely than one occurring in September/October. Overall I put the probability of YES around 10-13%.",
"sub_question_estimates": {
"sq1": 0.85,
"sq2": 0.1,
"sq3": 0.12
},
"what_would_change_my_mind": "A credible Yonhap/KASA report of failed thruster retests, a launch-vehicle anomaly, or an explicit November+ target announced before Aug 31 would push me above 70%; a confirmed specific October launch date from the late-August committee meeting would push me below 5%."
},
"plan": {
"combination_logic": "weighted_average",
"domain": "science",
"n_sub_qs": 3,
"n_tools": 5,
"reasoning_approach": "Start from the strong status-quo anchor that KASA currently targets late October 2026, then weight the probability that the late-August launch management committee or new technical reports shift the official target out of October; sub-question probabilities are blended via weighted average since all reflect the same underlying schedule risk.",
"sub_questions": [
{
"id": "sq1",
"question": "Will the late-August 2026 Nuri launch management committee (or KASA) announce a specific launch date that falls within October 2026?",
"rationale": "The committee scheduled for late August is the designated body to fix the final date; if it confirms an October date, the question resolves NO.",
"weight": 0.45
},
{
"id": "sq2",
"question": "Will any credible report before August 31, 2026 indicate the fifth Nuri launch has slipped beyond October 2026 (e.g., to November/December 2026 or 2027)?",
"rationale": "Direct path to YES resolution \u2014 a further announced slip past October.",
"weight": 0.35
},
{
"id": "sq3",
"question": "Will new technical problems (nanosatellite thrusters, launch vehicle, or range issues) be reported between August 7 and August 31, 2026 that jeopardize the October window?",
"rationale": "Emergent technical trouble is the main causal driver that would push the target out of October; Nuri has a history of short-notice delays.",
"weight": 0.2
}
],
"tool_requests": [
{
"parameters": {
"queries": [
"\ub204\ub9ac\ud638 4\ucc28 \ubc1c\uc0ac \uc77c\uc815 10\uc6d4 \ubc1c\uc0ac\uad00\ub9ac\uc704\uc6d0\ud68c",
"Nuri rocket fifth launch date October 2026 KASA",
"\ub204\ub9ac\ud638 \ubc1c\uc0ac \uc5f0\uae30 11\uc6d4"
]
},
"target_sub_questions": [
"sq1",
"sq2",
"sq3"
],
"tool_name": "web_search"
},
{
"parameters": {
"lookback_days": 90,
"queries": [
"Nuri rocket launch date KASA October 2026",
"\ub204\ub9ac\ud638 \ubc1c\uc0ac\uad00\ub9ac\uc704\uc6d0\ud68c \ubc1c\uc0ac\uc77c \ud655\uc815",
"KAIST nanosatellite thruster Nuri delay"
]
},
"target_sub_questions": [
"sq1",
"sq2",
"sq3"
],
"tool_name": "article_search"
},
{
"parameters": {
"brief": "Find the most recent (August 2026) statements from the Korea AeroSpace Administration (KASA), the Korea Aerospace Research Institute, or Korean media (Yonhap, Korea JoongAng Daily, Chosun, Hankyoreh) about the officially targeted launch date/month for the fifth Nuri (KSLV-II) rocket launch. Determine whether the target remains October 2026, whether a specific date was fixed by the launch management committee in late August 2026, and whether any further delay beyond October has been announced.",
"max_searches": 4,
"question_title": "Will the officially targeted launch month of the Nuri rocket be something other than October 2026, as of August 31, 2026?"
},
"target_sub_questions": [
"sq1",
"sq2",
"sq3"
],
"tool_name": "claude_news"
},
{
"parameters": {
"queries": [
"Nuri (rocket)",
"KSLV-II launches",
"Korea AeroSpace Administration"
]
},
"target_sub_questions": [
"sq3"
],
"tool_name": "wikipedia_lookup"
},
{
"parameters": {
"code": "import numpy as np\n# Base rate: probability an announced launch month slips again within a ~3-4 week window\n# Nuri history: launches 1-4 each had multiple short delays, but month-level target changes\n# within a 3-week window are less common. Prior on month-level slip announced in \u003c25 days.\np_slip_per_month = 0.30 # historical monthly hazard of a month-level target change for Nuri\ndays = 24\np_window = 1-(1-p_slip_per_month)**(days/30)\nprint(\u0027base rate month-target change in window:\u0027, round(p_window,3))\n# Adjust: committee meeting late August is an event that could formally re-set date\nfor p_committee_moves in [0.10,0.15,0.20]:\n print(p_committee_moves, \u0027combined:\u0027, round(1-(1-p_window*0.6)*(1-p_committee_moves),3))\n",
"description": "Base-rate estimate for probability the officially targeted Nuri launch month changes away from October within the Aug 7-31 window."
},
"target_sub_questions": [
"sq2",
"sq3"
],
"tool_name": "code_execution"
}
]
},
"question": {
"close_time": "2026-08-15T12:00:00Z",
"description": "## Description\nKorea JoongAng Daily (August 2, 2026): [Fifth Nuri rocket launch delayed to October over satellite thruster tests](https://www.koreajoongangdaily.com/korea/fifth-nuri-rocket-launch-delayed-to-october-over-satellite-thruster-tests/12803873)\n\n\u003e The fifth launch of Korea\u0027s homegrown Nuri rocket has been postponed until October due to problems with thrusters on nanosatellites to be carried aboard the vehicle, officials said Sunday.\n\n\u003e According to the Korea AeroSpace Administration (KASA) and the KAIST Satellite Technology Research Center, the launch was delayed from its original schedule to allow time to replace and test underperforming thrusters on some nanosatellite payloads.\n\n\u003e Thrusters provide the propulsion needed for satellites to adjust or maintain their orbits and are key components for nanosatellites that fly in formation while maintaining fixed intervals.\n\n\u003e The final launch date will be determined at a launch management committee meeting scheduled for late August, he added.\n\n`{\"format\": \"metac_reveal_and_close_in_period\", \"info\": {\"post_id\": 45089, \"question_id\": 45239}}`\n\n## Resolution Criteria\nThis question resolves as **No** if, according to [credible sources](https://www.metaculus.com/faq/#definitions), as of August 31, 2026 a body with the authority to do so, such as the [Korea AeroSpace Administration](https://www.kasa.go.kr/), is currently targeting the fifth [launch](https://en.wikipedia.org/wiki/Nuri_\\(rocket\\)#Launches) of the Nuri rocket to occur in October 2026.\n\n## Fine Print\nAs of August 6, 2026, the most recent credible [report](https://www.yna.co.kr/view/AKR20260731129400017) by the Yonhap News Agency quotes KASA Administrator Oh Tae-seok stating that the relaunch of the rocket would be (via Google Translate) \"by late October.\" Thus, a question closing on August 6, 2026 would resolve as **No**.\u0026#x20;\n\n***\nThis question\u0027s information (resolution criteria, fine print, background info, etc) is synced with an [original identical question](https://www.metaculus.com/questions/45089) which opened on 2026-08-07 12:00:00. This question will resolve based on the resolution criteria and fine print of the linked original question. However, if this question would resolve differently than the original question, then this question will be annulled. Additionally, if the original question\u0027s resolution could have been known before this question opened, then this question will be annulled.",
"question_type": "binary",
"title": "Will the officially targeted launch month of the Nuri rocket be something other than October 2026, as of August 31, 2026?"
},
"research": {
"cross_market_brief": "## Cross-Market Signals\n\n### Polymarket\n- \"US announces end of Iranian blockade by August 15, 2026?\" \u2192 Yes: 0.01, Volume: $3.0M\n- \"US announces end of Iranian blockade by August 31, 2026?\" \u2192 Yes: 0.20, Volume: $1.6M\n- \"US announces end of Iranian blockade by August 22, 2026?\" \u2192 Yes: 0.13, Volume: $468.8K\n- \"Will Elon Musk post 40-64 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.80, Volume: $137.2K\n- \"Will Elon Musk post 90-114 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.00, Volume: $117.6K\n- \"Will the Doge-1 Lunar Mission launch by December 31, 2026?\" \u2192 Yes: 0.04, Volume: $932.1K\n- \"US-Iran Final Nuclear Deal by August 18, 2026?\" \u2192 Yes: 0.00, Volume: $2.6M\n- \"Will Elon Musk post 65-89 tweets from August 13 to August 15, 2026?\" \u2192 Yes: 0.20, Volume: $91.3K\n- \"Will Shakhtar Donetsk win the 2026-27 UEFA Champions League Championship?\" \u2192 Yes: 0.00, Volume: $5.3M\n- \"Will the Fed increase interest rates by 50+ bps after the September 2026 meeting?\" \u2192 Yes: 0.00, Volume: $5.3M",
"errors": [],
"has_cross_market": true,
"n_errors": 0,
"n_tools": 5,
"tools": [
{
"elapsed_s": 33.54,
"error": null,
"success": true,
"summary": "18 results",
"tool_name": "web_search"
},
{
"elapsed_s": 0.38,
"error": null,
"success": true,
"summary": "19 articles",
"tool_name": "article_search"
},
{
"elapsed_s": 19.43,
"error": null,
"success": true,
"summary": "9 citations",
"tool_name": "claude_news"
},
{
"elapsed_s": 1.23,
"error": null,
"success": true,
"summary": "3 pages",
"tool_name": "wikipedia_lookup"
},
{
"elapsed_s": 0.17,
"error": null,
"success": true,
"summary": "Base-rate estimate for probability the officially targeted N",
"tool_name": "code_execution"
}
]
},
"synthesis": {
"error": null,
"evidence": [
{
"claim": "KASA and KAIST postponed the fifth Nuri launch to October 2026 to replace and test underperforming nanosatellite thrusters, per August 2, 2026 reporting.",
"credibility": 90,
"direction": "DOWN",
"priced_in": true,
"recency": "RECENT",
"source": "web_search",
"strength": "STRONG",
"sub_question_id": "sq1"
},
{
"claim": "KASA official Kim Jin-hee said thruster performance shortfalls have been addressed and \u0027necessary improvements\u0027 completed to enhance stability.",
"credibility": 80,
"direction": "DOWN",
"priced_in": true,
"recency": "RECENT",
"source": "web_search",
"strength": "MODERATE",
"sub_question_id": "sq1"
},
{
"claim": "KASA Administrator Oh Tae-seok stated on July 31, 2026 that the Nuri relaunch would occur \u0027by late October.\u0027",
"credibility": 92,
"direction": "DOWN",
"priced_in": true,
"recency": "RECENT",
"source": "web_search",
"strength": "STRONG",
"sub_question_id": "sq1"
},
{
"claim": "KASA plans to convene the Nuri Launch Management Committee in late August 2026 to finalize the specific launch date.",
"credibility": 85,
"direction": "NEUTRAL",
"priced_in": true,
"recency": "RECENT",
"source": "web_search",
"strength": "MODERATE",
"sub_question_id": "sq1"
},
{
"claim": "For the 4th Nuri launch, the launch management committee set a specific date (Nov 27, 2025) roughly a month ahead with backup dates through Dec 4.",
"credibility": 88,
"direction": "NEUTRAL",
"priced_in": true,
"recency": "DATED",
"source": "web_search",
"strength": "MODERATE",
"sub_question_id": "sq1"
},
{
"claim": "The fifth Nuri launch has already slipped repeatedly, from an original June 2026 target through August and September to October 2026.",
"credibility": 85,
"direction": "UP",
"priced_in": true,
"recency": "RECENT",
"source": "web_search",
"strength": "STRONG",
"sub_question_id": "sq2"
},
{
"claim": "A mid-August 2026 secondary report (BigGo Finance) says the launch is now most likely in late October rather than an earlier October window.",
"credibility": 45,
"direction": "DOWN",
"priced_in": false,
"recency": "VERY_RECENT",
"source": "web_search",
"strength": "WEAK",
"sub_question_id": "sq2"
},
{
"claim": "No credible report found through mid-August 2026 indicating the fifth Nuri launch has slipped beyond October 2026.",
"credibility": 65,
"direction": "NEUTRAL",
"priced_in": true,
"recency": "VERY_RECENT",
"source": "web_search",
"strength": "MODERATE",
"sub_question_id": "sq2"
},
{
"claim": "Article searches for August 7\u201331, 2026 surfaced no new reports of Nuri launch-vehicle, payload, or range technical problems.",
"credibility": 50,
"direction": "NEUTRAL",
"priced_in": false,
"recency": "VERY_RECENT",
"source": "article_search",
"strength": "WEAK",
"sub_question_id": "sq3"
},
{
"claim": "Chuseok holiday in late September 2026 was cited as a scheduling constraint pushing the launch into October.",
"credibility": 75,
"direction": "NEUTRAL",
"priced_in": true,
"recency": "RECENT",
"source": "web_search",
"strength": "MODERATE",
"sub_question_id": "sq3"
},
{
"claim": "A Chinese Long March 7A failed on August 11, 2026, and Blue Origin\u0027s New Glenn exploded in May 2026, illustrating industry-wide launch schedule volatility.",
"credibility": 90,
"direction": "NEUTRAL",
"priced_in": true,
"recency": "VERY_RECENT",
"source": "article_search",
"strength": "WEAK",
"sub_question_id": "sq3"
},
{
"claim": "The nanosatellite thruster issue affects payloads (KAIST cluster), not the Nuri launch vehicle itself, and remediation was described as complete.",
"credibility": 78,
"direction": "DOWN",
"priced_in": true,
"recency": "RECENT",
"source": "web_search",
"strength": "MODERATE",
"sub_question_id": "sq1"
}
],
"information_gaps": [
"No direct reporting on the outcome of the late-August 2026 launch management committee meeting",
"No base rate for how often KASA/KARI slips a target month within ~2 months of launch",
"No Korean-language Yonhap/KASA press releases dated after Aug 15, 2026",
"Unknown whether backup dates would extend into November"
],
"key_uncertainties": [
"Whether the August committee meeting sets a firm October date or defers",
"Whether thruster retest results confirm satisfactory performance",
"Possibility of newly discovered launch-vehicle or range issues before Aug 31",
"Whether an announced window straddles late October into early November"
],
"n_evidence": 12
},
"timings": {
"forecast": 35.84,
"plan": 24.14,
"research": 33.54,
"synthesis": 23.37
}
}