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Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. When a new comet ...

Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? In a paper ...

It’s said that if you catch one in the night sky the universe might grant you a wish. On any given night, shooting stars are ...

Perhaps the best known of all comets is Halley, correctly pronounced so that it rhymes with rally, not daily. It is named after the 17th-18th century astronomer Edmond Halley. This ...

A newly-discovered comet is currently hurtling towards the sun and could be visible to UK stargazers. The unexpected comet is ...

Then, to keep it safe, he put the ticket in a jar and buried it in his yard. Comet SWAN, hailing from the Oort Cloud beyond Pluto, has been visible through telescopes and binoculars over the past ...

Unlike so many other post-apocalypses, Survive the Fall’s ruined world wasn’t caused by man’s own nuclear negligence. Instead ...