By comparing Hartley 2 to the four other comets spacecraft have visited, they're hoping to gain a better understanding of comet structure and behavior, and perhaps of the solar system's formation.

Astrophotographer Dan Bartlett managed to capture an image of the comet in December from his backyard in California. He was able to see "intricate tail structure" in the comet's plasma tail ...

The comet’s structure may be shaping how the spewed clouds of gas and ice appear from Earth, creating the appearance of horns to ground-based telescopes. But precisely what is happening is not ...

“Because this comet travels fairly close to the Earth, we are presented with a great opportunity to study a more detailed view of the composition and structure of the coma, the cloud of gas and ...

Using an impactor equivalent to 5 tons of TNT, the goal was to reveal the comet's inner structure. The experiment wasn’t just explosive - it reshaped our understanding of these icy relics from ...

The "comet of the century" Comet C/2023 A3 Tsuchinshan-ATLAS has been delighting stargazers after reaching its closest point to Earth in more than 80,000 years over the weekend. The brightest ...

An ancient comet is gracing our night skies this month. Catch it now because it won’t be back for another 80,000 years. Comet Tsuchinshan–ATLAS, discovered in 2023, is expected to be visible ...

“A comet traveling through the interstellar medium ... She added in an email: “Water ice in its amorphous form has a fluffy structure containing pockets where other volatile molecules can ...

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 ...

BOSTON - It isn't often that we get the chance to see a comet with the naked eye. But, in a year already filled with so many astronomical treats, it looks like we will be able to add a comet to ...