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.
Amateur observers helped reveal a rare eclipse of a close stellar pair known as b Persei by a third companion star.
Two new studies confirm that the white dwarfs that explode as Type Ia supernovae can approach death in two different ways.
With the initial release of the USNO's Robotic Astrometric Catalog (URAT1), astronomers now have precise positions for about 228 million stars in the northern sky. Given my love of stone walls, I've been thinking about building one in the backyard to enclose the flower beds. But I haven't had the gumption to actually buy the…
NASA’s NuSTAR mission has detected an unexpected haze of high-energy X-rays in our galaxy’s center, perhaps the signal of a mass stellar graveyard.
New evidence suggests that nanoflares, small but potent bursts of energy, might heat the Sun’s atmosphere. But not everybody’s convinced.
A 6th-magnitude nova erupted inside the Sagittarius Teapot and reached 4th magnitude. Now it has started fading.
A team of astronomers compared two images taken 18 years apart to catch the dramatic evolution of a forming star and its surroundings.
Astronomers have found two just-born star clusters an incredible 16,000 light-years above the plane of the Milky Way galaxy.