Our galaxy and its nearest large companion, Andromeda, may be headed for a collision on a cosmic scale. What happens then?

Think of the heaviness that remains after your Uncle Frank starts an explosive conversation about politics at Thanksgiving dinner. That may be the least scientific, much less cosmic way of describing ...

A mysterious cosmic explosion has astronomers buzzing, as a strange event may hint at an entirely new kind of stellar cataclysm. After detecting ripples in space-time, scientists spotted a fast-fading ...

WASHINGTON, April 3 (Reuters) - A supernova - the explosive death of a star - is always violent, blasting material into space while typically leaving behind a compact stellar remnant like a neutron ...

STARKVILLE, Miss.—A Mississippi State physicist has achieved a significant scientific advancement, producing a direct laboratory measurement of a key nuclear reaction believed to occur during ...

It’s “common knowledge”—and the scare quotes should be a warning—that the sun is an average star. But it’s not, and in fact it’s not even close: The sun is in the top 90th percentile of stars by mass.

Artist’s impression of an eccentric neutron star–black hole binary. The neutron star’s path is shown in blue and the black hole’s motion in orange as the two objects orbit each other. The eccentricity ...

"We found a collision within a collision. The galaxy collision triggered a wave of star formation that, over hundreds of millions of years, led to the birth and eventual collision of these neutron ...

The violent collision of two neutron stars hundreds of millions of years ago is providing Penn State scientists with new insights into how the universe’s heaviest elements were created. Gamma-ray ...