It's officially spring now. A week or so ago I sat in the Adirondack chair outside and soaked up some 73-degree sunshine, ...

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 ...

Initial observations suggest the comet, called C/2025 F2 (SWAN), will continue getting brighter as it approaches the sun.

A newly discovered comet, C/2025 F2 (SWAN), is now visible in the eastern sky before dawn. Officially designated on April 8, ...

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

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 ...

Found in late March, comet SWAN25F has significantly increased in brightness, but it’s not visible to the naked eye. Only ...

Travel across Australia by rail on a journey of continental proportions — from Sydney to Perth via outback ghost towns, drag ...

Fortunately, this asteroid will pass by safely without incident. NASA’s Center for Near-Earth Object Studies (CNEOS) constantly monitors asteroids and comets to assess their impact risk. Using data ...

Asteroid 2014 TN17, a massive 540-foot space rock, will safely pass Earth at a distance of 5 million kilometers on March 26, 2025. However, its potentially hazardous designation stresses the ...

NEW YORK — Venus will pass between the Earth and sun on Saturday during what's called an inferior conjunction. But don't plan on seeing the linkup. The sight is extremely difficult to spot ...