Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

We have discovered two interstellar objects so far, ’Oumuamua and Comet 2I/Borisov. ’Oumuamua had no dust tail and a ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

The shattered star at the center was once a white dwarf, a stellar ember no larger than Earth, yet almost as heavy as the Sun ...

Scientists have observed a new type of black hole that is too heavy to have been born from a star but still too slim to … The ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...

"This tangible evidence of a double detonation not only contributes towards solving a long-standing mystery, but also offers ...

Astronomers have identified the largest structure in the universe, named Quipu, which spans over 1.3 billion light-years and contains a staggering 200 quadrillion solar masses.

Long theorized but never observed, the first known “planet with a death wish” is described by Ilin and her colleagues in a ...

Astronomers have finally caught a dying star in space going out with a bang — and then another bang. The new photographic ...