The number memory game
Six pairs to find, one for each body: the cards show the gravity. Flip two cards at a time.
- Pairs
- 0/6
- Moves
- 0
- Best
- -
A hint, for fewer moves
You do not have to guess the number cards at random. Most of the time the bigger body pulls harder, and the one farther from the Sun has the longer year: if you know that, you start ahead. Memory is still the big part, but you can work out one card in two.
The numbers come from the NASA Planetary Fact Sheet, line by line.