The catastrophic collision of a black hole and a neutron star sent ripples across the universe. New analysis of those ripples ...

The comet formed in a cold and distant part of the early Milky Way up to 12 billion years ago, putting it just under 2 ...

An old NASA science satellite is no more. The U.S. Space Force says the Van Allen Probe A plunged uncontrolled from orbit on Wednesday, reentering over the Pacific west of the Galapagos Islands.

Scientists simulated an asteroid impact, and Deinococcus radiodurans’ cell membranes made it through. This suggests that life ...

The results reveal that our universe is reverberating with cosmic collisions. Some of the waves stem from pairs of black ...

A new three-volume study explores how quantum physics, gravitation and cosmology may be understood within a unified ...

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 ...

The Princeton-led NASA mission has officially begun its science mission to study the sun and everything it touches. Princeton marked the occasion with a panel discussion, science talks and a reception ...

A new study explains how some supernovas are particularly dazzling—the glow from a magnetic, spinning ball of neutrons called a magnetar. An assist from Einstein is what settled the case ...

Last year, our most detailed map of the universe yet suggested our understanding of dark energy has been wrong for decades. The shock result is reigniting the search for a better cosmic story ...

Astronomers have for the first time seen the birth of a magnetar—a highly magnetized, spinning neutron star—and confirmed that it's the power source behind some of the brightest exploding stars in the ...

The star astrophysicist sat down with Newsweek to discuss Mars missions and what truly drives human discovery.