Comet SWAN has an estimated brightness of magnitude +6.1 (a measure of visual brightness), which, in a dark, moonless sky, ...

Here's where Comet 3I/ATLAS, Lemmon and SWAN are in the Halloween sky.

Lemmon, which is a rare green comet, can be seen with the naked eye on Oct. 21, according to the Royal Astronomical Society, ...

Skywatchers are anticipating prime viewing conditions for an annual showing of shooting stars and two comet flybys ...

Full Supermoon . See the biggest and brightest moon of the year—the full supermoon—on the evening of Nov. 5. The moon will ...

An interstellar comet that originated outside our solar system just flew by the sun. Next, the object will fly by Earth in December.

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...

Keep an eye on the night sky in October—you might catch a falling star! The Orionid meteor shower reaches its peak on the ...

Astronomer Gianluca Masi and his Virtual Telescope Project will host a special livestream on Oct. 20 beginning at 1:30 p.m.

Comets Lemmon and SWAN are making their closest approach to Earth in a rare cosmic treat. Can you see it in NJ? Here's timing ...

Comets Lemmon and SWAN R2 will be visible during October 2025 during the Orionid and Taurid meteor showers, creating a month of comets, "shooting stars" and fireballs.

A photographer who captured a comet in the night sky above the Yorkshire Dales said he spent weeks waiting for the perfect ...