The massive rock is believed to be ten storeys high and will skim past the planet at 14,743 miles per hour in the early hours ...

Comets without tails, called dark comets, are a newly discovered space object. Now, astronomers know they come in 2 classes.

Dark comets are comets that are so small, fast and/or chemically rare that they are difficult to see from Earth ...

NASA discovered and later confirmed the first interstellar object to enter our solar system. It wasn't aliens. But artist ...

The JWST’s spectra data also showed the huge amount of various ices with different volatilities and how they are made. Chiron ...

Scientists have discovered seven more "dark comets," and analysis of this haul suggests that the puzzling planetoids are ...

The study also reveals that these mysterious objects fall into two distinct groups based on their orbit and size. With this ...

Comets are icy bodies that formed alongside the planets in the early Solar System before being flung into its distant outer ...

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

A reanalysis of the data from the "rubber-ducky" comet 67P, collected nearly a decade ago, suggests comets may have deposited a lot more water on Earth than scientists previously thought.

When you buy through links on our articles, Future and its syndication partners may earn a commission. The idea that comets delivered water to early Earth has fallen out of favor in the past decade, ...