Mystery #1Tier 2physics / rockets
There is nothing to push against in space, so how does a rocket move at all?
To walk, you push on the ground. To swim, you push on the water. But out in space there is no ground, no water, not even any air to shove against. So how on Earth, or off it, does a rocket manage to move at all?
Your guess
What do you think a rocket could possibly push against out in empty space?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.