A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

You can watch comet 3I/ATLAS live online tonight (July 3), thanks to the Virtual Telescope Project, which will livestream ...

A massive object from outside the solar system is passing through, but the world is not in danger. It is a rare visitor, ...

Astronomers have discovered a new object that originated outside of our Solar System — only the third to be found.

It appears our solar system is getting more popular with out-of-towners. Astronomers have found a third interstellar object, ...

An object that appears to be from beyond our Solar System has been spotted hurtling towards the Sun, which if confirmed would ...

A team of astronomers has uncovered an extraordinary cosmic mystery, a giant planet that seems to be hurtling toward a fiery ...

Astronomers using NASA's James Webb Space Telescope spotted TWA 7b, a Saturn-sized exoplanet around a nearby star ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

Researchers from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences and Columbia University ...

"Astronomers may have just discovered the third interstellar object passing through the Solar System!" the agency's ...

Last week the Rubin Observatory released the first data from a newly commissioned telescope. Astronomers, engineers and ...