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

The answer is as obvious as it seems – the Earth looks flat when you're standing on it, not cone-shaped. Visual evidence ...

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

Hubble reveals a mysterious 'controlled' jet system on 3I/ATLAS. Is this 130,000mph interstellar visitor a natural comet or ...

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

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

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

An alternative is to write Avatar novels, going into significant detail on the world and telling the stories of the sequels. ...

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

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 ...