Within a few dozen light years of the Sun, the sky is crowded with stars that could, in principle, host living worlds. I want ...

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

NASA and Breakthrough Listen issue a final verdict on the interstellar comet 3I/ATLAS. Is it an alien spaceship? Read the ...

Planets larger than Earth but smaller than Neptune – so called sub-Neptunes – are the most common type of known exoplanet. It ...

"We want to have epic, futuristic spaceships with lots of people in them," Elon Musk said at a Texas SpaceX presentation.

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

Discovered by volunteer scientists, this alien planet is out of synch with its siblings ...

We live in a very exciting time: answers to some of the oldest questions humanity has conceived are within our grasp.

Is 3I/ATLAS an interstellar spy? Scientists investigate 13 anomalies of the solar system's new visitor, from its 'anti-tail' ...