It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
NASA invented baby food as we know it today.
7
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Jupiter is bigger than all the other planets combined.
254