Astronomers are hustling to use interplanetary spacecraft to study the interstellar comet dubbed 3I/ATLAS while the sun is ...

An interstellar comet that originated outside our solar system has just made its closest pass to the sun, brightening ...

The interstellar invader Comet 3I/ATLAS is continuing to surprise scientists, this time by brightening at an unexpectedly ...

The interstellar comet 3I/ATLAS has a thick irradiated crust that no longer resembles its home star system, simulations and ...

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

"The implication of alien technology would be huge and therefore we must take it seriously,” Harvard's Avi Loeb told Newsweek ...

Spacecraft have revealed that the comet—which one scientist suggests could be an alien spacecraft—is now "distinctly bluer ...

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

A photographer says he feels "very lucky" to have captured Comet C/2025 A6. Also known as Comet Lemmon, it was first detected ...

Astronomer Gianluca Masi captured spectacular footage of a glowing meteor trail wrapping around the colossal tail of Comet ...

November 2025 offers a fading green comet, the year’s biggest supermoon, Taurid and Leonid meteors, Orion’s return, and Mercury’s best dawn view.

The comet is on what’s known as a hyperbolic trajectory, which means that it doesn’t follow an orbital path around the sun.