For the first time, astronomers have spotted a star that exploded not once, but twice. A new image of a roughly 300-year-old supernova provides visual evidence that some dying stars undergo a double ...

Our Milky Way could have many more satellite galaxies than we've detected so far. They're just too faint to be seen.

Scientists predict up to 100 invisible galaxies may orbit the Milky Way, hiding just beyond our current detection limits.

Imagine a star powered not by nuclear fusion, but by one of the universe’s greatest mysteries—dark matter. Scientists have ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

Dark matter is one of nature's most confounding mysteries. It keeps particle physicists up at night and cosmologists glued to ...

New simulations suggest that dozens of ultra-faint “ghost” galaxies may be orbiting the Milky Way, hidden from current ...

The Andromeda Galaxy, located 2.5 million light years away, has fascinated observers for centuries. Once believed to be part of the Milky Way, everything changed in 1923 when Edwin Hubble identified ...

The James Webb Space Telescope’s Near-Infrared Camera captured an "array of stars that make up the dwarf galaxy Wolf–Lundmark–Melotte (WLM)," according to the NASA. Zoom into the imagery ...

The Hubble Space Telescope captures the dwarf galaxy NGC 4449 in the constellation Canes Venatici (The Hunting Dogs).

The Hubble Space Telescope captures the dwarf galaxy NGC 4449 in the constellation Canes Venatici (The Hunting Dogs).