galaxies

Supermassive black holes may create conditions akin to "cosmic intersections with failed traffic lights" that make collisions between smaller stellar-mass black holes inevitable.

An incredibly brief, ultrabright explosion has led astronomers to a newfound magnetic star outside the Milky Way, which could be the first of many extragalactic magnetars, according to new research.

New infrared observations from the James Webb Space Telescope unveil a galaxy far, far away that's creating new stars.

Two gargantuan structures discovered near our galaxy's ancient heart may be some of the earliest building blocks of the Milky Way. Researchers have named them Shiva and Shakti.

The ancient obect Gz9p3, which appeared as a single point of light through the Hubble Space Telescope, is actually one of the most enormous galaxies in the early universe, James Webb Space Telescope observations reveal.

Astronomers using the James Webb Space Telescope have detected the oldest "dead" galaxy ever observed, at just 700 million years after the Big Bang. The stalled-out relic defies explanation by our current knowledge of the early cosmos.

From nebulas and black holes to baby star nurseries and ancient collisions, the universe has never looked more beautiful thanks to NASA's $10 billion-telescope.

Astronomers believe the first galaxies formed around giant halos of dark matter. But a newly discovered galaxy dating to roughly 13 billion years ago mysteriously appeared long before that process should have occurred.

From a 'potentially hazardous' asteroid to a pair of galaxies unable to quell their attraction, here are five of the most beautiful heart-shaped objects seen in space.

The Hubble Space Telescope has snapped a stunning photo of one of the most distant Einstein rings ever found. The luminous halo of light aligns perfectly with another galaxy, making it look like a cosmic engagement ring.