Probability board
Science markets
What Polymarket and Kalshi traders give each outcome right now, most active first. Updated 6m ago.
Will Elon Musk visit Mars before Aug 1, 2099?
Kalshi · $1.8K today
10%– 0.0pt
Will two SpaceX Starships dock together before 2028?
Kalshi · $158 today
67%– 0.0pt
Will Blue Origin land an uncrewed Blue Moon MK1 lander on the moon before SpaceX lands an uncre…
Kalshi · $144 today
61%▲ +1.5pt
Will a humanoid robot walk on Mars before a human does?
Kalshi · $66 today
47%▲ +2.4pt
Will SpaceX land anything on Mars before 2030?
Kalshi · $7 today
19%– 0.0pt
Manned Starship mission to Mars before 2030?
Kalshi · $0 today
14%– 0.0pt
Probabilities are market prices, not forecasts we make. Informational only, not financial advice. Browse every market or compare the two platforms.