Interstellar comet 3I/ATLAS is tearing across the inner solar system at roughly 130,000 miles per hour, a speed that turns ...

The other two known interstellar comets did not offer such an opportunity.

Tune in today (Jan. 16) to bid farewell to interstellar comet 3I/ATLAS, courtesy of a livestream from the Virtual Telescope ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a ...

Comet C/2024 E1 (Wierzchos) will reach perihelion during a close solar approach on January 20, 2026, increasing brightness and defining its visibility timeline.

Solar system comets are often at their brightest as they draw close to the sun ...

Astronomers spotted comet C/2025 R3, potentially visible without telescopes. It will approach Earth and Sun in April 2026, ...

WASHINGTON — The Orionid meteor shower will put on a cosmic show in the night sky this week, giving stargazers a chance to see up to 20 meteors per hour. The Orionids will peak on Tuesday, Oct. 21, ...

No two comets are exactly alike. While SWAN’s orbit is very well aligned with the plane of the planets as they orbit the sun, Lemmon’s orbit is highly inclined, tipped by more than 140 degrees, ...