OptionProbability
2050-2070
2160 or after
2071-2104
2105-2159
2037-2049
2029-2036
Up to 2028
21
20
19
11
6
2
Other
2030
2038
2025
2026
2027
2023
2024
61
17
10
5
1
3
4
55
37
Evidence of extraterrestrial life
Observation of population III stars (first generation)
Spiral galaxies forming earlier than thought
Finding Earth twin (geologically)
18
14
12
Has observed population III stars (first generation)
Spiral galaxies forming earlier than previously thought
54
23
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