An ultra-fast flash from the galaxy M82 reveals what may have been a rare "extragalactic magnetar giant flare." ...

The GWTC 4.0 catalog records 128 new gravitational wave signals, revealing mergers of black holes and neutron stars detected by LIGO.

It's a celestial event that has astronomers both excited and puzzled. Dan Smith has the story of how a gamma-ray burst across ...

SXS—Simulating eXtreme Spacetimes—is an ongoing scientific collaboration that has been generating simulations of dramatic ...

The race is on to harness the near-infinite power of nuclear fusion—by building a star on Earth. And scientists are closer ...

Betelgeuse, the brilliant red star marking Orion's shoulder, has long been suspected of harboring a secret. I have to confess, Betelgeuse holds a special place in my heart as the first star I ever ...

After decades of ultra-reliable behavior, the pulsar PSR J1713+0747 suddenly changed its output in April 2021. Astronomers ...

For decades, scientists have suspected that Betelgeuse—the giant red star that forms Orion’s shoulder—wasn’t alone. Now, a ...

Relativistic electron-positron plasmas are ubiquitous in extreme astrophysical environments such as black-hole and neutron-star magnetospheres, where accretion-powered jets and pulsar winds are ...

The James Webb Space Telescope has changed the game for planet hunters. Recent readings found what look like the first clues ...

Our readers agree that in the unlikely event you were able to approach a neutron star, it would look very smooth and bright ...