Guess the year
Time traveller
Put a little space history in its place.
Round 1 of 5
Voyager 1 launches
Ready when you are.
Put a little space history in its place.
Guess the year of each milestone in space exploration. An exact year earns 100 points; each year away costs 2.5 points.
Each game has five daily rounds worth up to 100 points each (500 in total). The rounds change at midnight on your device’s local calendar date, so players in different time zones can be on different days. Your daily result is stored only in this browser. Practice mode gives a new set of rounds whenever you like and does not affect the daily result.
Each milestone links to its NASA page, such as Sputnik 1 (1957), Apollo 11 (1969) and the James Webb Space Telescope launch (2021).
No. The games are free and run in a web browser on desktop or mobile, with no sign-up or download. Scoring happens on your device. Sound is off until you turn it on.
Updated