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Science & Space Odds on Polymarket

Updated September 23, 2026 · 113 live markets · refreshed twice a day

As of September 23, 2026 at 15:42 UTC, Polymarket lists 113 live Science & Space markets with $1.02M traded in the last 24 hours. The most active is Will the US confirm that aliens exist? (By December 31 3.2%), followed by Hantavirus pandemic in 2026? (Yes 2.9%), U.S. enacts AI safety bill before 2027? (Yes 13.5%).

Science, space launches, climate, pandemics and other science questions. Every live market on the topic is below, with the leading outcome's probability, its 24-hour change, trading volume and end date.

Live Science & Space markets

MarketLeading outcome24h change24h volumeEnds
Will the US confirm that aliens exist?By December 31 3.2%-0.1 pts$856.6KJan 1, 2027
Hantavirus pandemic in 2026?Yes 2.9%+0.1 pts$67.4KJan 1, 2027
U.S. enacts AI safety bill before 2027?Yes 13.5%+7.5 pts$15.3KJan 1, 2027
Where will 2026 rank among the hottest years on record?1 75%+0.5 pts$7.4KMar 2, 2027
Tesla and SpaceX merger officially announced?By December 31, 2027 65.5%$4.8KJan 1, 2028
Skin cancer vaccine BLA submitted?By June 30, 2027? 86.5%-1.5 pts$4.7KJul 1, 2027
Will there be a power grid emergency before October 1?Central US (SPP) 2.1%-8.1 pts$4.4KOct 2, 2026
Which Millennium Prize Problem will AI solve next?Hodge Conjecture 55.5%-6.0 pts$3.9KJan 1, 2028
SpaceX Starship Flight Test 14October 31 97.5%-0.1 pts$3.5KJul 1, 2027
Confirmed US Screwworm case in Livestock beyond Texas by...December 31 99.9%++22.9 pts$3.4K
Highest wind gust at NYC LaGuardia, September 24 to 28?25 kt or more 94.5%$3.3KSep 29, 2026
OpenAI announces another Millennium Prize solution?By December 31, 2027 81.5%$3.2KJan 1, 2028
Peak wave height at NY Harbor, September 23 to 28?8 ft or more 97%$3.1KSep 29, 2026
Will CMI declare a Millennium Prize Problem solved by ___?December 31, 2028 32.5%+8.5 pts$3.0KJan 1, 2029
AI lab announces another Millennium Prize solution?By December 31, 2027 82.5%-1.0 pts$2.1KJan 1, 2028
Precipitation in Hong Kong in September?<275mm 97.7%+2.6 pts$1.7KDec 8, 2026
How many West Nile neuroinvasive disease cases will be reported among New York City residents in 2026?35 to 49 45.5%+1.0 pts$1.7KApr 1, 2027
When will the first hurricane form in the Atlantic in 2026?No Atlantic hurricane will form in September 2026 91.5%+2.0 pts$1.7KOct 1, 2026
Which math problems will AI solve in 2026?Hadamard Matrix Conjecture 32.5%$1.6KJan 1, 2027
Will a hurricane make landfall in Hawaii before 2027?Yes 30.5%+17.5 pts$1.6KDec 31, 2026
How many 6.5 or above earthquakes worldwide September 21 - September 27?0 56.5%+6.0 pts$1.4KSep 28, 2026
Highest wind gust at Boston Logan, September 24 to 28?35 kt or more 57.5%$1.4KSep 29, 2026
Largest IPO by market cap in 2026?Anthropic 53.9%-1.9 pts$1.3KJan 2, 2027
Screwworm National Emergency declared?By December 31 30%-16.0 pts$1.2KJan 1, 2027
How many more Millennium Prize Problems will AI solve in 2026?0 49.5%+0.5 pts$1.2KJan 1, 2027
Precipitation in NYC in September?2-3" 59.5%+6.0 pts$1.1KDec 8, 2026
Precipitation in Seattle in September?1.5-2" 45.5%+0.5 pts$1.1KDec 8, 2026
Measles cases in U.S. in 2026?↑3.5k 99.9%+$1.1KJan 1, 2027
Lowest Mississippi level at St. Louis by November 30?-3.00 to -1.01 ft 21.5%$1.0KDec 2, 2026
Ebola pandemic in 2026?Yes 2.8%+0.5 pts$986Jan 1, 2027
Trump declassifies new UFO files?By November 30 87.5%$930Jan 1, 2027
How many Chinook will pass Bonneville Dam by October 31?More than 550,000 89.8%-1.5 pts$916Nov 4, 2026
How many 5.5 or above earthquakes worldwide September 21 - September 27?≤6 56.5%+2.5 pts$814Sep 28, 2026
Precipitation in London in September?30-40mm 45.5%$800Dec 8, 2026
September 2026 Temperature Increase (ºC)1.30–1.34ºC 9.5%-3.5 pts$692Nov 2, 2026
New pandemic in 2026?Yes 5.5%$678Jan 1, 2027
What will the peak RONI be for the 2026–27 El Niño?Over 2.5 78%+0.5 pts$662Apr 1, 2027
How strong will Hurricane Polo be?Category 5 97.9%-0.4 pts$652Oct 16, 2026
September 2026 1st, 2nd, or 3rd hottest on record?2nd hottest 97.6%+0.4 pts$624Oct 1, 2026
How many hurricanes will form during the Atlantic Hurricane Season in 2026?1-3 57.5%+2.0 pts$582Dec 1, 2026

73 smaller markets are not shown; all 113 are in the JSON data.

For multi-outcome markets the leading outcome is the one with the highest price; for yes/no markets it is the YES price. Prices are Polymarket share prices read as probabilities, not executable quotes.

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More Tech & AI odds

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Frequently asked questions

What are the Science & Space odds on Polymarket today?

As of September 23, 2026 at 15:42 UTC, Polymarket lists 113 live Science & Space markets with $1.02M traded in the last 24 hours. The most active is Will the US confirm that aliens exist? (By December 31 3.2%), followed by Hantavirus pandemic in 2026? (Yes 2.9%), U.S. enacts AI safety bill before 2027? (Yes 13.5%).

How many Science & Space markets are open on Polymarket?

113 live markets as of September 23, 2026, not counting single games and markets that close within a few hours. The table lists them by 24-hour trading volume and refreshes twice a day.

Where do these odds come from?

From Polymarket's public market data. Each probability is the displayed price of an outcome's YES share, so 60¢ reads as roughly a 60% chance. Polymarket View is independent and not affiliated with Polymarket; nothing here is financial advice.

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Free JSON

/api/v1/topics/science.json — every live market on the topic, CC BY 4.0 (credit “PolymarketTrader” with a link). See the developer docs.

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