Scientists have discovered more than 6,000 planets beyond our solar system. What if some of them aren't planets at all, but ...

Sky gazers across the U.S. will have a chance to see an extraordinary celestial event on Friday as all of the planets in our solar system will appear in the evening sky. This phenomenon known as a ...

In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent analyses discount the evidence. An artist’s concept of the exoplanet K2-18b, ...

Stargazers and space enthusiasts were treated to a rare event on Friday, February 28, for the second time this year. A “rare planetary parade”, with seven planets aligning in a single line, was viewed ...