Photos show that comet C/2025 F2 (SWAN) experienced a "major eruption," causing it to become temporarily brighter. However, it's still unclear whether the icy object is a true "cryovolcano." ...

A newly discovered comet is fascinating astronomers and amateur stargazers alike as it remains a brightening feature in the ...

Currently only visible from the Northern Hemisphere, C/2025 F2 (SWAN) looks like a small green sphere. Its vivid green glow is caused by diatomic carbon molecules, which emit a green light under the ...

A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and several years ago he saw something he couldn’t explain. Farnocchia works at ...

Newly-discovered comet SWAN25F is expected to reach peak brightness on May 1 and is predicted to be visible from Earth with ...

Last year there was much ballyhoo over the so-called “devil comet,” some will-it-won’t-it drama of Tsunchinshan-ATLAS, and the sudden discovery (and quick demise) of a third comet that failed to meet ...

Skywatchers throughout the Northern Hemisphere are enjoying views of the newly discovered Comet SWAN.

Much of what scientists know about the early solar system comes from meteorites – ancient rocks that travel through space and survive a fiery plunge through Earth’s atmosphere. Among meteorites, one ...

Water did not come to Earth from asteroids – it was already here, a new study by the University of Oxford suggests. Many ...

Comet SWAN25F was discovered using photos from the European Space Agency's SOHO spacecraft and can currently be spied using ...

Scientists discovered Earth's first crust had continental chemical signatures. This challenges beliefs about when these ...

Water is essential to life, yet its true origin on Earth still stirs debate. Scientists have long wondered whether it came ...