Sound doesn't travel in space.
255
NASA invented baby food as we know it today.
7
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
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
If NASA sent birds into space they would soon die; they need gravity to swallow.
146