How space telescopes capture distant galaxies using infrared imaging, precision optics, and astronomy technology beyond Earth's atmosphere.

Astronomers tracked a star in Andromeda as it dimmed and vanished without the usual fiery explosion, offering rare clues to ...

New research suggests that the heart of the Milky Way may be dominated by a dense clump of dark matter rather than the ...

For nearly a century, astronomers have known that the universe is expanding. Most galaxies are carried outward with the flow ...

Scientists hope to probe the nature of general relativity through a possible pulsar found in the center of the Milky Way, ...

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...

Deep inside a nearby galaxy, a black hole sits behind a thick wall of dust. Almost all its light gets trapped.

The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...

A sheet of dark matter lying beyond the boundary of the Local Group is responsible for this.

Galaxies are massive, far exceeding the size of the one depicted in the movie “Men in Black.” These celestial bodies span ...

Spring has sprung — and for lovers of deep-sky objects, that means it’s galaxy season. This is a time of the year when that pesky, band of glowing stars and shadowy dust that we call the Milky Way is ...

In 1963, Caltech researcher Maarten Schmidt had a eureka moment. He was looking at the spectrum of a mysterious object named 3C 273, a source that had been found and cataloged with then-novel radio ...