Conditions are near-perfect to spot this celestial visitor, which won't appear again in our night sky for another millennium.

Sky-watchers in Vermont and Northern New York will have a chance to see two celestial events Thursday night under a mostly ...

Comet Lemmon has brightened dramatically since its discovery on Jan. 3,, raising hopes that it could become a spectacular ...

There's a new comet in the night sky over Connecticut, and it might soon be bright enough to be seen with the naked eye.

See Comet Lemmon shine in the skies over England in a new sunset portrait. Award-winning astrophotographer Josh Dury has ...

A new comet discovered this month, called C/2025 R2 (SWAN) or SWAN25B, may soon be visible this fall for stargazers who know ...

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a ...

Scientists have spotted the first clear sign of water from an interstellar comet, 3I/ATLAS, offering new clues to the ...

Sky watchers in New Hampshire have the chance to see the northern lights or aurora borealis Thursday night into early Friday ...

Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than ...

ALMA captures surprising activity in comet C/2014 UN271, Bernardinelli-Bernstein comet, the largest ever detected.

THERE’S A COUPLE INTERESTING THINGS GOING ON IN THE NIGHT SKY OVER THE NEXT COUPLE OF NIGHTS. A NEW COMMENT, OR AT LEAST A ...