An aging spacecraft more than a decade into its mission may soon undertake one of the most ambitious maneuvers in modern ...

NASA observed interstellar comet 3I/ATLAS through the lens of the James Webb Space Telescope for the first time.

Astronomers have spotted only three objects known to have come from outside our solar system. The newest, called 3I/ATLAS, is ...

A cosmic visitor is stirring up an earthly debate. A Harvard University astrophysicist has suggested the incoming interstellar object 3I/ATLAS could be an alien probe. But NASA and most astronomers ...

The issue concerns sunlight reflecting off the satellites’ surfaces. SpaceX has attempted to reduce the brightness of the reflected light by coating the satellites in a dark material, and also by ...

The European Space Agency's Jupiter Icy Moons Explorer is ready for a planned flyby of Venus on Sunday after the agency fixed ...

The comet is only the third known object originating outside of out solar system to pay us a visit.

Each of Comet Izumi’s unknown orbits from the Oort Cloud is speculated to take just under a billion years. The comet has, ...

NASA has a planetary defense project that identified possible threats in near our solar system that could cause another mass ...

"The IRTF data may indicate that the object might be a dead comet, but in the Arecibo images it appears to have donned a skull costume for its Halloween flyby," said Kelly Fast, IRTF program ...