The discovery resets our understanding of how ice behaves in the frigid vastness of deep space and could influence our ...

Recent observations have revealed carbon monoxide venting from the largest comet ever seen, providing clues about its origins ...

A quick and easy guide to comets, including what they are made of, where they come from and why their tails are so long.

The ‘AI browser’ era is upon us, with Perplexity making its first move with Comet that promises to unlock task automation and personalisation, albeit access is limited to Max subscribers, for now ...

An astrochemist found a simpler explanation and tested it with an astronomer: in interstellar space, cosmic rays converted water to hydrogen in the comet's outer layers.

Comets like Halley, which have been around before, are more predictable – but even there you never quite know the mix of layers that will be exposed.

Astronomers have called for help to identify a mystery object that may have hit Saturn on Saturday in what could be the first ...

Size comparison of various comet nuclei. NASA, ESA, Zena Levy (STScI) Outside the nucleus is a porous, almost fluffy layer of ice, kind of like a snow cone. This layer is surrounded by a dense ...

The comet will only be visible on the Northern Hemisphere, and binoculars and telescopes are highly recommended for those wanting to look out for it.

What's the difference between an asteroid and a comet? A comet is basically a dirty iceball composed of rock and ice. The classic image is of a bright "star" in the night sky with a long curved ...

Comet Nishimura Survives Brush With the Sun and Enters Evening Sky The space snowball is now heading back out to deep space for the next 400 years, but it might be possible to catch it as it leaves.