We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if it's negative?

Scientists have found a remarkably small yet bright object from the early universe that doesn’t make sense in our existing models of how stars and galaxies formed, even our own Milky Way. That means ...

But scientists hope this $300 million lab will be able to answer these questions – vital to understanding the building blocks of the universe. Neutrinos date back to the Big Bang, and trillions zoom ...

"It's like trying to hear that whisper while a loud concert is playing next door." A U.K.-led team of scientists is developing a miniature spacecraft that will orbit the moon in an effort to detect ...

As just one of all the living creatures on Earth, you're along for the ride as our planet constantly moves in two major ways.

A monster galaxy from the early universe shows that the cosmos was rich with oxygen when it was only less than 3% of its present age, astronomers have found. The discovery raises questions about how ...

Astronomers have a new explanation for mysterious "little red dots" observed in the early universe: Maybe they're not crowded star clusters that upend everything scientists know about galaxies. Maybe ...