Interstellar comet 3I/ATLAS is carrying chemical signatures that do not match anything formed in our solar system.

NASA has highlighted the return of comet 10P/Tempel, a periodic comet that is once again moving through the inner solar ...

A NASA-led study revealed that a near-Earth object long mistaken for an asteroid—1998 SH2—is actually a hidden comet—a discovery that could prove vital for predicting future threats to Earth.

Space snowballs can trick the experts.

China’s Tianwen-1 orbiter captured a faint but remarkable view of 3I/ATLAS as the interstellar comet raced past Mars. The ...

Now is your chance to see a comet that takes more than five years to return to Earth's cosmic neighborhood. Here's what to ...

A comet about 6 miles wide in diameter that was discovered more than 150 years ago will be observable from Earth this summer.

This diagram shows the path Comet C/2025 K1 (ATLAS), or K1, took as it swung past the sun and began its journey out of the solar system. NASA's Hubble Space Telescope captured the inset image of the ...

Exploration Labs has proposed the first commercial deep space ride share mission, known as Apophis EX, to rendezvous with ...

Sometime in 2029, the European Space Agency is scheduled to launch its Comet Interceptor Mission. The Interceptor will wait for a long-period comet to arrive in the inner solar system then set off on ...

The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space telescopes and orbiters have been documenting the rare visit. A mysterious ...