Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Jupiter is bigger than all the other planets combined.
254
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46