I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Astronomers are scrambling to gather data on a mysterious object that’s currently hurtling through the solar system.

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

An object thought to have come from another star has been seen entering the solar system at high speed, and is expected to ...

A newly discovered object, dubbed A11pl3Z, appears to be moving too fast and straight to have originated in the solar system.

The second half of the 19th century was a particularly interesting time to imagine Mars. This was a period during which the ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to oblivion ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Update: NASA has confirmed the object is an interstellar comet and says it has been officially named 3I/ATLAS.

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

Interstellar object headed towards Mars, but poses no threat to Earth, says head of planetary defence at the ESA.

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ...