Mars. From forming black holes to phantom dark energy, discover the cosmic mysteries astronomers uncovered last year.

Europa has a vast, saltwater ocean beneath its icy shell, with more than twice the amount of water in all of Earth’s oceans ...

An alien flying in from space aboard a comet would look down on Earth and see that there is this highly influential and ...

As 3I/ATLAS heads past Jupiter, viral theories claim the interstellar object could return towards Earth. What we know.

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

The mischievous alien starred in a billion-dollar grossing film, sold more than $4 billion dollars in merchandise, and took ...

Harvard's Avi Loeb warns interstellar comet 3I/ATLAS could be alien tech. Experts weigh in on planetary defence and the risks ...

A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests.

Physicists discovered that the famous 'Star Trek' spaceship got a lot right about designing a ship to jump from galaxy to ...

Pluribus imagines Kepler-22b as an ocean world that sends a gift to humanity through radio waves. In real life, no such ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.

Ask any sci-fi fan to list the top space sci-fi shows of all time, and that list will almost always include shows like Star ...