It is good to be back and there is plenty to explore in the December night sky. Starting on Tuesday is the comet C/2025 T1 ...

When a faint green smudge appeared in images from a backyard telescope in Aguadilla, Puerto Rico, on Nov. 22, 2025, astronomers did not expect it to upend basic assumptions about how comets work. Yet ...

NASA has a number of telescope assets which have captured images of interstellar comet. They include: The Hubble, Webb, TESS, ...

Learn what makes Comet 3I/Atlas, the third interstellar object ever observed entering into our solar system, so significant for space research.

Interstellar comet 3I/ATLAS exhibits a bright, extended ion tail while releasing gas and dust as it travels through the inner solar system. A stunning new image of interstellar comet 3I/ATLAS (C/2025 ...

Edmond Halley, born November 8, 1656, is recognized for his mathematical prediction of Halley's Comet's return in 1758, despite not being its discoverer or having observed it. Halley applied Isaac ...

An interstellar comet that originated outside our solar system just made its closest pass of the sun, setting it on an outgoing path — but it’s not leaving our cosmic neighborhood yet. The comet, ...

No two comets are exactly alike. Of course, they can appear similar. Two decently bright comets that share a superficial resemblance are gracing our skies right now, in fact: C/2025 A6 (Lemmon) and ...

A spectacular celestial display will soon be visible. The Orionid meteor shower, which is known to produce fireballs on occasion, is expected to peak overnight Wednesday, according to NASA. Recognized ...

Already in full swing, the Orionid meteor shower may have reached its peak overnight on October 20-21, but the show is still set to go on for another couple of days. Like nearly every Orionid show, ...

In a rare doublecosmic treat and once-in-a-millennium visit from an icy green comet, stargazers can look to the night sky through October 2025 to view Comet Lemmon and Comet SWAN, which will be ...