We know of three interstellar objects (ISO) that have visited our inner solar system. Oumuamua was the first one, and it came ...

The object, estimated to be the size of a city block, is only the third known interstellar visitor to our solar system since ...

What if Earth sat at the center of the solar system? Imagine a universe rearranged with our planet as the gravitational hub.

There are no confirmed exomoons, moons orbiting distant exoplanets in other solar systems. There are a few candidates, but ...

In a new book, NASA astrobiologist Caleb Scharf says the fate of life on Earth may hinge on leaving our planet behind ...

In a striking new view from space, the European Space Agency's Solar Orbiter has given scientists their first close-up ...

A rare interstellar comet, 3I/ATLAS, will grace the eastern pre-dawn sky on November 11, 2025. Discovered in July 2025, this ...

Newly discovered comet C/2025 V1 (Borisov), which has some minor similarities to 3I/ATLAS, will make its closest approach to ...

A rare sight in the night sky caused early confusion when Comet Borisov was wrongly identified as interstellar object ...

Overall, the apparent disappearance of debris plume behind 3I/ATLAS is not a call for any UFO, alien or extraterrestrial life ...

I/ATLAS has been travelling for billions of years and is older than our solar system. Its long journey through the stars has ...

A mysterious visitor from beyond the Solar System has emerged from its solar flyby without the cometary tail astronomers ...