Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

Scientists confirmed that the interstellar comet 3I/ATLAS, which passed closest to Earth in December 2025, showed no ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien ...

Scientists have found new evidence suggesting that interstellar 3I/ATLAS is not an alien spaceship, as one conspiracy theory ...

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

Let's test how well you paid attention in Science class. Can you tell me which planet is the largest of them all? If you answered Jupiter, then give yourself a gold star and a pat on the back. Over 11 ...

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown. When you purchase through links on our site, we may earn an affiliate ...

NASA’s James Webb Space Telescope has found the strongest evidence yet that a small, rocky planet outside our solar system has air, even though it orbits precariously close to its star. The exoplanet, ...

In 1965, twelve astronauts vanished into deep space on a mission Earth never acknowledged—sent to live among aliens on a planet called Serpo. What they found was a world of impossible tech, but not ...