In some supernova cases, astronomers find no trace of the former star’s outermost layer of hydrogen. What happened to the hydrogen? Suspicions that companion...
As a stellar-mass black hole pulls in gas and dust from an orbiting star, it can give off spectacular bursts of X-rays that bounce and echo off the inspiraling...
Astronomers from the Australian National University, the University of New South Wales, the University of Canterbury and the University of Tokyo have found...
A micronova is a thermonuclear blast that happens on the surface of certain stars and lasts for just a few hours making them extremely difficult to observe.
This...
Mass loss in red giant stars is one of the major uncertainties in the astrophysics.
Red giant stars. Image credit: NASA’s Goddard Space Flight Center...
Astronomers using the MAGIC (Major Atmospheric Gamma Imaging Cherenkov) telescopes have detected gamma rays from the 2021 outburst of RS Ophiuchi, a recurrent...
HR 6819, a highly intriguing object that was recently proposed as a multiple system containing a stellar-mass black hole, is in fact a binary star system...
The binary neutron-star merger GW170817 was discovered in August 2017. Many telescopes saw different kinds of light after the discovery, but only NASA’s...
Kepler-16b, a rare exoplanet that orbits around two stars, has been detected using the SOPHIE spectrograph at the 1.93-m telescope of the Observatoire...
At an estimated distance of 130.5 light-years, CWISE J014611.20-050850.0AB has a projected separation of 129 AU (astronomical units), or 129 times the...
Astronomers using the Large Binocular Telescope have discovered two unusual hot subdwarf stars: PG 1654+322 and PG 1528+025. While normal stars have surfaces...
Astronomers have assembled a catalog of all known Galactic binaries featuring massive disks of gas and dust that are similar to the protoplanetary disks...
One of the most poorly understood stellar evolutionary paths is that of binary stellar systems undergoing common-envelope evolution, when the enormous...
Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered a unique object of uncertain nature — possibly a disintegrating...
Named b Centauri (AB)b (or b Centauri b), the newfound exoplanet is estimated to be only 15 million years old and 10 times the mass of Jupiter, according...
Using new data from ESA’s Gaia star-mapping satellite, the Zwicky Transient Facility, and the Shane Telescope at Lick Observatory, astronomers have observed...
A white dwarf in the binary system LAMOST J024048.51+195226.9 (J0240+1952 for short) completes a full rotation once every 24.93 seconds, making it the...
Astronomers using the Multi Unit Spectroscopic Explorer (MUSE) instrument on ESO’s Very Large Telescope have discovered a low-mass black hole in the...
Astrophysicists from the LIGO-Virgo-KAGRA Collaboration have detected a further 35 gravitational waves since the last catalog release in October 2020,...
