Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

Solar and cosmochemical data indicate high levels of carbon, nitrogen, and oxygen in the Sun. Researchers have unveiled a new ...

A supernova close enough to Earth could strip the ozone layer and cause mass extinction, but no immediate threat exists.

An international team led by researchers in Japan and Europe has discovered a new multi-planet system around a sun-like star, ...

The movements of the planets in the Solar System are pretty difficult to get your head around, even before we get started on ...

Samples collected from the near-Earth asteroid Ryugu have revealed clues about a primordial magnetic field that helped ...

Why does Jupiter look like it has a surface – even though it doesn’t have one? – Sejal, age 7, Bangalore, India ...

Scientists may have explained a mystery that has puzzled us about Uranus for decades. Researchers believe that data that ...

If you didn't know, Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. Let's explain ...

The traditional Chinese solar calendar divides the year into 24 solar terms. Frost's Descent, (Chinese: 霜降), the 18th solar term of the year, begins this year on Oct 23 and ends on Nov 6. Frost's ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...