A theory as to why we haven't heard from aliens which renowned theoretical physicist and cosmologist Stephen Hawking agreed with has resurfaced online. Planet Earth is about the size of a speck of ...

Sci-fi is one of the most popular genres in television today. With that in mind, let's take a moment to heap praise on 15 ...

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown.

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.