Astronauts get taller when they are in space.
224
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
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
Some asteroids have other asteroids orbiting them.
131
The population of the Earth has more than doubled since 1950.
151
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12