Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that ...

A newly discovered comet is about to make its closest pass to Earth on Tuesday night. It should be visible over the Bay Area ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere. Both hail ...

Though it won't become any brighter, Comet SWAN will reach its closest point to Earth on Oct. 20, coming within 24 million ...

A rare, green-glowing comet will make its closest approach to Earth next week — and it won’t return for more than a thousand ...

A 2017 astronaut photo shows the islands of Dek and Daga lurking in the murky, algae-infested waters of Ethiopia's Lake Tana.

A pair of once-in-a-lifetime comets are rocketing through our skies right now, and it's a rare treat because they won't be ...

The comet will continue to brighten after that, likely reaching its brightest around October 31 or November 1, at which point ...

Two comets, C/2025 A4 (Lemmon) and C/2025 R2 (SWAN), are about to reach their closest approach to Earth and you can watch the ...

China's rare earth export curbs threaten the clean energy supply chain, but global exposure helps ETFs like PBW, FRNW, and ...

The silver-grey rock contains a hidden story. Somewhere in the early summer of 2025, China’s Chang’e6 capsule landed on the ...