"If there were only one object, that would be interesting but an outlier. If there's two, we're pretty confident that's a ...

A new study has found that such heavy metals may have formed through eruptions on a rare type of star called a magnetar.

Researchers suggest a hidden population of lunar fragments, or 'minimoons', may be traveling near Earth, indicating more than ...

Did you know that the sun is up for more hours this month than in August? August is summertime, and May is still spring, so it may not seem quite right.

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Launched over 50 years ago, this piece of the Kosmos 482 mission was designed to survive the punishing conditions on Venus.

Soviet-era spacecraft Kosmos 482 expected to reenter Earth's atmosphere in early May, posing minimal risk of impact.

For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

A Soviet-era spacecraft meant to land on Venus in the 1970s is expected to plunge uncontrolled back to Earth, possibly within ...

Quantum ideas describe particles and fields in tiny packages, but general relativity paints gravity as smooth curves in space ...

Jackie explains that a laser inside the tubes is split, bounces off mirrors, and goes straight back to sensors at the center ...

Tsuchinshan-ATLAS was that rare type of comet that arrived with fanfare and lived up to the hype, serving up naked-eye views ...