Scientists have observed cryovolcanoes erupting on comet 3I/ATLAS — giving us a new clue about what's inside it.

As the 3I/ATLAS nears its closest distance to Earth, an international team of astronomers now says the space rock may be covered in active, icy cryovolcanoes. If true, the evidence detailed in their ...

Observations with the instrument SPHERE at ESO's Very Large Telescope have produced an unprecedented gallery of "debris disks" in exoplanetary systems.

For thirty years, SOHO has watched the Sun from a stable perch in space, revealing the inner workings of our star and ...

I/ATLAS is coming closer to Earth each day and spectators are racing to predict what happens next. With its most recent ...

Interstellar comet 3I/ATLAS is tearing through our solar system at roughly 130,000 miles per hour, a speed that turns ...

In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

A small, icy traveler from deep space has just threaded its way through the inner Solar System, offering a fleeting but ...

Traces of comets and asteroids in distant solar systems: In young planetary systems, mutual collisions between asteroids or ...

One of the most intriguing events of the month is the perihelion — or closest approach to Earth — of Comet 3I/ATLAS on ...