A huge comet makes its closest approach to Earth today. Here's how to watch it live.

Head-Banging Woodpeckers Could Give Themselves a Concussion Every Day: Here's How They Avoid It

China's proposed Venus mission would investigate the planet's atmosphere and geology

To search for alien life, astronomers will look for clues in the atmospheres of distant planets – and the James Webb Space Telescope just proved it's possible to do so