Comet 3I/ATLAS is only the third known object to barrel into our neighborhood from interstellar space, and it is already shredding old assumptions about how comets form, move, and even what they are ...

The interstellar comet 3I/ATLAS is leaving our solar system for good. Here's what to know about its journey and NASA's ...

A comet has been spotted disintegrating in the atmosphere of the sun for the first time. Such sun-diving comets are common but none have been seen surviving entry into the sun's atmosphere until now.

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from a European Space Agency orbiter on its way to Jupiter.

Comet 3I/ATLAS continues to make astonishing headlines, thanks to new findings from astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA). This new research reveals that 3I/ATLAS ...