The heart of an astronaut actually gets smaller when in outer space.
216
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
It would take more than 150 years to drive a car to the sun.
569
Jupiter is bigger than all the other planets combined.
254
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The earth travels through space at 660,000 miles per hour.
189
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10