A massive star in the Andromeda Galaxy, one of the most luminous objects in its neighborhood, has quietly disappeared. Over ...

Through the years since it was first launched, the Hubble Space Telescope has captured stunning photographs of the Cassiopeia ...

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 ...

WASHINGTON — A supernova — the explosion marking the end of a massive star's life — is one of the brightest cosmic events, usually about a billion times more luminous than the sun. But some — a small ...

It's never too late to solve a cold case. A new paper from Syracuse University researchers proposes an explanation for both a mysterious stellar object discovered in the year 2013 and an astronomical ...

For the first time, astronomers have witnessed the birth of one of the universe's most powerful magnets, or magnetars, at the heart of an unusually bright supernova, thanks to an effect first ...

In recent years, whenever astronomers have gazed into the night sky, they’ve noticed something peculiar: Some of its massive stars—the true titans of the cosmos—appear to be missing. The largest of ...

Cosmic rays seen at Earth show a wide range of particle energies, from 107 electron-volts (eV) to more than 1020 eV, the ...

Supernovas are the most brilliant of explosions. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A supernova is what happens when a star has ...

Artist’s conception of a magnetar surrounded by an accretion disk that is wobbling, or precessing, because of the effects of general relativity. Some models of magnetars suggest that high-speed jets ...