Play with space
Tools to play with, not pages to read. The numbers are the real ones, taken from the cards in the book.
How big?Put two things side by side and see the difference. They are always drawn to their true scale.
Your weight on other planetsThe same body weighs a different amount depending on where it is. Choose your weight and your age, and see what happens.
The phases of the MoonThe Moon is always half lit. What changes is how much of that half we can see from here. Move the slider and watch the two views together.
Why we have seasonsIt is not the distance from the Sun: it is the tilt. Straighten Earth’s axis and watch the seasons disappear.
Connect the starsTap the stars in the right order and the figure appears. Then turn them, and find out they were not close together at all.
The rover on MarsOn Mars you cannot drive live: by the time you see the obstacle, the rover has already hit it. Up there the rover gets the list of the day’s instructions, and you write it.
Land on the MoonHold down the engine and set the lander down gently. On the Moon you have time, because gravity there is six times weaker than ours. Then try Mars, and then Earth.
Bigger, hotter, fartherTwo bodies, one question. Choose, and discover the two real numbers with the NASA line they come from.
The number memory gameTwelve cards, six pairs: every body with its number. Flip two cards at a time and find them.
The spinning Solar SystemStart the clock and watch the nine bodies go around, each at its own speed. Then switch to the real distances, and see how empty it is.More tools are on the way.