Today: One minor Harry Potter character actually has two well-known star names: Regulus Arcturus Black, the brother of Sirius Black who is Harry Potter’s godfather.

The sun is Earth's closest star, yet its beauty is too intense to appreciate with the naked eye. Here are some of the most ...

The Chandra X-ray Telescope is investigating the habitability of exoplanets. NASA explains. Credit: NASA/CXC/A. Hobart ...