Sound doesn't travel in space.
255
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
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
There are more nerve cells in the human brain than there are stars in the Milky Way.
349
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
NASA invented baby food as we know it today.
7
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