Four planets in the solar system are about to appear in alignment in the night sky. Here's how stargazers will be able to see ...

Prior to 2040, the last planetary quintuplet occurred in the year 1186, and according to Uptain, records show that the close ...

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

(CNN) - New images from the James Webb Space Telescope are showing auroras around Neptune for the first time. These images could not be seen by earlier telescopes or space crafts. The near ...

April skies feature close planet pairings, a bright meteor shower, and stunning views of the ancient star cluster M3.