That complexity could mean bigger fireworks ahead. With the sunspot now rotating to face Earth, it could pose a threat for stronger space weather events in the coming days. M-class flares, like those ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen – possibly predating our solar system by more than three billion years, researchers say. The "water ...

New research has revealed everything astronomers currently know about the mysterious interstellar object 3I/ATLAS.

Named 3I/ATLAS, the object reportedly rich in water ice was discovered on July 1 by the ATLAS survey telescope in Chile, when it was about 416 million miles (670 million kilometers) from the Sun.

Several planets stand still in the sky, Titan’s shadow transits Saturn, and Venus gives Taurus a second eye in the sky this ...

I/ATLAS isn't just fascinating because it is the third interstellar visitor found in the solar system; new research suggests it's also the oldest comet ever seen, at over 7 billion years old.

Researchers from the University of Glasgow teamed up with the culture and research organisation Science Ceilidh to develop a dance to mark the 10th anniversary of the historic first detection of ...

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

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

Colorado residents and visitors who tilt their heads skyward after dark this July will witness awe-inspiring astrological ...

On Earth, water is so intertwined with life that our search for life on other worlds is essentially a search for water. When ...

An astronomer led an international study mapping galaxy clusters, and it was published Monday in The Astrophysical Journal ...