A comet's tail always points away from the sun.
2
Jupiter is bigger than all the other planets combined.
254
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
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
NASA invented baby food as we know it today.
7
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
Pluto is smaller than Russia.
9