Hot on the tail of the Quadrantids meteor shower, another spectacle in the sky is about to arrive: comet Atlas C/2024 G3, ...

A newly-discovered comet might light up the night sky in the coming weeks, possibly shining even brighter than the planet ...

In 2017, astronomers discovered the interstellar visitor 'Oumuamua. In 2023, we reported the discovery of seven solar system ...

The water that makes up the oceans acted as a key ingredient for the development of life on Earth. However, scientists still ...

Scientists have discovered seven more "dark comets," and analysis of this haul suggests that the puzzling planetoids are divided into two distinct families, further deepening the mystery of why ...

Dark comets are often small, just a few meters to a few hundred meters wide. This leaves less surface area for material to escape and form into the beautiful tails we see on typical comets.

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.

Some of this stuff is known as mysterious dark matter, others are things like dark comets, which as their name suggests, are far more difficult to see from Earth than something like Tsuchinshan-Atlas.

One leading idea is that space rocks such as comets and asteroids delivered water to the Earth through impacts. As a planetary scientist, I’m curious about the kinds of space objects that could ...