The most luminous supernova ever discovered, ASASSN-15lh, challenges a popular theory for blazingly bright exploding stars.
Astronomers looking for clones of a massive and famously unstable star in the Southern Hemisphere sky have found five in other galaxies.
An early peak at a forming star system reveals tantalizing clues about its origin.
Astronomers are now finding dozens of fast-moving runaway stars by searching for the bow shocks they create in interstellar gas and dust.
For the first time, astronomers have predicted the appearance of a supernova.
Infrared observations by the Hubble Space Telescope reveal jets from forming stars.
Following a wildly popular contest, the International Astronomical Union has named 14 stars and 31 planets that orbit them.
A new computer simulation provides a brief glimpse at what makes stellar bombs tick.
High-mass stars may outshine and outweigh the Sun, but observations show all stars may have had a similar beginning.
Astronomers have caught a giant elliptical galaxy “shimmering” as its stars pulsate.
The Fermi Gamma-ray Space Telescope has discovered that almost all of the highest energy photons in the Large Magellanic Cloud come from two pulsars.
Astronomers have gathered enough observations to produce an exquisite image of another star’s surface.
New research connects stellar pulsations to these stars’ inner, unobservable magnetic fields.
The Kepler spacecraft recorded a bunch of irregular dimmings around one of its target stars, designated KIC 8462852. No natural phenomenon explains the dips well.
Watch for any slow, unusual meteors starting at nightfall tonight and tomorrow.
Observations of two cool white dwarfs show irregular outbursts in the stars’ otherwise steady rhythm of pulsations.
A new technique that relies on identifying stellar twins yields a novel way to measure the distances to stars.
A collaboration of amateur and professional astronomers has uncovered a rare variety of eclipsing binary star - and a supernova in the making.
Recent radio observations support the idea that brown dwarfs form like full-fledged stars do.
The famous supernova continues to transform: its necklace of hotspots is fading away as the shock wave moves further out.
Astronomers have detected what looks like auroral emission on an ultra-cool star.
Two binary systems and a fifth stellar wheel make for a rare, and so far unique, set of stars.
Astronomers have discovered an exploding star that belongs to the "superluminous" class, and it's the most luminous one ever found.
Astronomers are looking forward to 2018, when a young pulsar will pass through its binary star companion’s disk.
Super-sharp imaging confirms that the nearby red giant star L2 Puppis is forming a tiny bipolar nebula as it comes to the end of its life.