Astronomers witness first moments of planet formation as rock grains crystallize around distant star HOPS-315.

"This is a big step in understanding the outer solar system," team leader Rosemary Pike from the Center for Astrophysics | ...

The Solar System is a fascinating place, with each planet orbiting the Sun at its own unique distance. But how far apart are ...

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one day resemble our own.

Earth objects, astronomers recently discovered a comet visiting from interstellar space. This is only the third interstellar ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

The interstellar comet 3I/Atlas is the fastest and largest of its kind, giving astronomers a rare glimpse into extrasolar ...

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

The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was a ...

This diagram provided by NASA/JPL-Caltech shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system. (NASA/JPL-Caltech via AP) The newest visitor is 416 million ...

The NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) telescope in Rio Hurtado first spotted the object streaking in from the direction of the constellation Sagittarius. At the time, ...