Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

WASP-121 b is an ultra-hot gas giant where supersonic winds reshape its atmosphere, and molten iron rains from the sky. Its ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Ancient deep-sea organisms suggest movement, sexual reproduction, and complex animal life began earlier than previously thought.

Interstellar comet 3I/ATLAS carries isotopic ratios entirely outside the Solar System range, ESO’s Very Large Telescope has ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

You might think that legendary sci-fi author Arthur C. Clarke would've adored the Star Trek franchise, but that wasn't ...

Comets have played an interesting role in the history of astronomy. Since antiquity, many cultures saw them as omens or ...

A siphonophore—a colonial marine invertebrate related to the venomous stinging Portuguese Man-o-war—is scanned using Deep ...

The idea that octopuses might be aliens emerged from the theory of panspermia (Stelele 2018), according to which life on Earth is not entirely of terrestrial ...

Stars Reach is the new MMO from Ralph Koster, creative lead on Star Wars Galaxies, and it is a fully physically simulated sci ...

Harvard astrophysicist Avi Loeb argues 3I/ATLAS and other interstellar objects may hint at alien technology, drawing fame, funding, and fierce criticism.