Mercury takes only 88 Earth days to orbit the sun.

Earth reaches perihelion this morning at 8 A.M. EST, when our planet's not-quite-circular orbit brings us to our closest point to the Sun for the year. On this day, we are just 91.4 million miles ...

A new study examines how much material from the closest star system to Earth will end up in orbit around the Sun, and how ...

An international team of scientists has confirmed the discovery of a super-Earth—a planet larger than Earth but smaller than ...

In contrast, the term "aphelion" refers to the point where the orbiting body is farthest from the sun. Earth will reach its closest point to the sun, known as perihelion, on Jan. 3, 2026 at 12:15 ...

New photos of comet C/2024 G3 (ATLAS) suggest that it could be disintegrating due to "thermal stress" from its recent slingshot around the sun. However, its fate is still unclear.

Researchers at the Chinese Academy of Sciences (CAS) aim to safely replicate the sun’s nuclear fusion processes here on Earth ... s recent achievement came close at 108 million degrees Celsius ...

The space rock is heading in our direction at some 18,700 miles per hour, according to the space agency's data.

At peak magnitude, seek out the goddess of love planet in a clear blue sky in the west-southwest during daylight hours, being ...

This might not sound that close, but Nasa's Nicola Fox puts it into perspective: "We are 93 million miles away from the Sun, so if I put the Sun and the Earth one metre apart, Parker Solar Probe ...

But of these planets, which is nearest to the sun ... Because Mercury rotates so slowly — once every 58 Earth days — in some places, the sun can appear overhead for weeks at a time.