In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Astronauts cannot burp in space.
232
Summer on Uranus lasts for 21 years.
358
Earth is the only planet in our solar system that's not named after a god or goddess.
17
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16