How is it that galaxies merge and collide but the universe is expanding and everything is moving away from everything else? Justin HammersleySterling Heights, Michigan Whether or not galaxies merge ...

Discover the fascinating world of hydroxyl megamasers, powerful cosmic lasers revealing secrets of distant galaxies and the universe's evolution.

A burst of light in the deep sky is doing something it should not be able to do. It looks like one supernova, but it shows up ...

Astronomers have long known the universe is expanding—but exactly how fast remains one of the biggest mysteries in cosmology. Different techniques for measuring the Hubble constant stubbornly disagree ...

Some stars don’t just shine; they also manufacture the raw ingredients of future worlds.

A subtle gravitational-wave “hum” from merging black holes may help settle the cosmic fight over how fast the universe is ...

Standing inside a dome in Citadel Mall, under a simulated sky, it’s easy to forget how remarkable that is: a city known for its past now helping shape curiosity about the future. The Charleston ...

A man accused of killing acclaimed astrophysicist Carl Grillmair had faced trouble with the law, including gun charges and a suspected burglary, weeks before the deadly encounter in Antelope Valley.

For decades, astronomers have known that the universe is expanding. To determine how fast it is growing today, scientists calculate a value called the ...

WASHINGTON - Astronomers have produced the largest and most detailed map ever made of the vast web of cold cosmic gas ...

SWG Restoration reveals Galactic Supply Lines, a Silkroad-inspired risk vs reward system connecting traders, crafters, ...

Scientists have known for nearly a century that the universe is expanding, with galaxies moving away from each other over time. The speed of this expansion today is called the Hubble constant. But ...