The moon of Saturn called Titan is quite small, but has a thick atmosphere.
In fact, if you made yourself a pair of wings, you could fly on Titan without needing any machinery – other than a space suit to keep you breathing and stop you from freezing to death!
There is a supermassive black hole at the centre of most galaxies!
If you had a huge bath in space, you could put Saturn in it and it would float.
There was a comet in 1994 which crashed into the surface of Jupiter! It was called Shoemaker-Levy 9.
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