Pluto is smaller than Russia.
9
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
NASA invented baby food as we know it today.
7
Summer on Uranus lasts for 21 years.
358
From the nitrogen in our DNA, to the calcium in our teeth, the iron in our blood, to the carbon in our apple pies - all were made in the interiors of collapsing stars; we're all made of stardust.
22
It would take more than 150 years to drive a car to the sun.
569
If two pieces of metal touch in space, they become permanently stuck together.
808