Astronomers have documented an unprecedented reversal in the rotation of comet 41P/Tuttle-Giacobini-Kresák, caused by jets of gas acting like thrusters as it neared the Sun. The comet’s spin slowed ...

Ice comes in more forms than what you’ll find in a freezer or a glacier. Since 1900, scientists have observed more than 20 ...

Websites need a new audit framework that accounts for AI crawlers, rendering limitations, structured data, and accessibility ...

Astronomers using the Subaru Telescope on Mauna Kea observed the interstellar comet 3I/ATLAS to study its composition after ...

Comet C/2025 R3 is putting on its final show as it passes close to the Sun before leaving the solar system forever.

"We hope to gain a deeper understanding of how planetesimals and planets formed in a wide variety of stellar systems, including our own solar system." ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A brightening comet is now becoming easier to see — and this ...

Usually, comets are dormant blocks of rock and ice. They only wake up when they get close to a star. The intense heat causes their ice to sublimate, flashing directly from a solid into a gas, which ...

A newly discovered comet, C/2025 R3 (PanSTARRS), is set to pass by Earth this week. The comet will make its closest approach to Earth on April 27, coming within 44 million miles. It may be visible to ...

A newly discovered comet, C/2025 R3 (PanSTARRS), could be the brightest of its kind visible from Earth in 2026. The comet will make its closest approach to the sun on April 19 and its closest approach ...

Comet C/2025 R3 is already drawing attention—and offers a rare chance to understand what separates an ordinary comet from a truly “great” one. Comet C/2025 R3 (PanSTARRS) hangs above Bietschhorn in ...