I/ATLAS comet is the 3rd-ever object discovered that originated from outside our solar system. It's not a threat, approaches ...

The 84-foot-diameter space rock—dubbed "2025 XM"—is hurtling through the solar system at a zippy 9,753 miles per hour.

Astronomers have followed 3I/ATLAS since its discovery on July 1. Hubble photographed it on July 21 from 277 million miles ...

NASA astronaut Jonny Kim flew home with two Roscosmos cosmonauts from the International Space Station packed tight in their ...

NASA is closely monitoring a bus-sized asteroid, “2025 XF1,” which is rapidly approaching Earth this week. With speeds of ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

The interstellar comet 3I/ATLAS reaches its closest point to Earth on Dec. 19, allowing close study with no threat to the ...

NASA’s TRACERS mission begins early science measurements in Earth’s southern polar cusp, tracking magnetic reconnection and ...

Kim officially became an astronaut in 2017. Expedition 72 and Expedition 73 marked Kim’s first visit to the ISS, where he ...

Our planet Earth and Mercury have invisible tails stretching millions of kilometres. These cosmic tails are real phenomena.

Comets are not the only celestial bodies with tails. Earth and Mercury also possess them, formed by different mechanisms.

NASA has lost contact with its MAVEN spacecraft that launched from Florida and has been orbiting Mars for more than a decade.