New findings about interstellar comet 3I/ATLAS reveal its surprising size, possible thick disk origin, and what makes it ...

A rare interstellar comet is flying through our solar system. Here's how—and when—you might be able to see Comet ATLAS from ...

A comet originating from outside our solar system has been spotted by a NASA-funded telescope in Chile, scientists confirmed this week, marking only the third known interstellar object to pass through ...

The newest visitor is 416 million miles (670 million kilometers) from the sun, out near Jupiter. NASA said the comet will make its closest approach to the sun in October, scooting between the orbits ...

This diagram provided by NASA/JPL-Caltech shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system.

This diagram provided by NASA/JPL-Caltech shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system.

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first spotted on July 1 by the NASA-funded Asteroid Terrestrial-impact Last ...