The sky could host a brief but remarkable event in early April 2026. Astronomers are closely tracking a newly discovered ...

Observations of comet 41P/Tuttle–Giacobini–Kresák show its rotation slowing, reversing and then speeding up.

Stargazers are keeping their fingers crossed that the MAPS comet survives its flyby of the Sun this Easter, likely becoming ...

Comet MAPS could soon become as bright as Venus, offering a once-in-a-decade spectacle for the naked eye. Here is what to ...

Interstellar comet 3I/ATLAS will soon reach its closest distance to Earth, so this may be our last, best chance to see this rare object before it heads back out into the universe, never to return. One ...

Scientists captured a comet breaking apart in real time, offering a rare look at ancient material hidden inside these icy ...

NASA’s Hubble Space Telescope has captured some of the most detailed images ever recorded of comets breaking apart in space, ...

Editor’s note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. (CNN) — The Hubble Space Telescope and ...

Today is the day that astronomers, amateur stargazers and alien conspiracy theorists alike have been waiting for: interstellar comet 3I/ATLAS is as close to Earth as it will ever get. But lest you ...