WD J2147-4035, an 11-billion-year-old white dwarf located 91 light-years away in the constellation of Grus, is accreting debris from orbiting planetesimals,...
ZTF J1813+4251 is a 51-minute-orbital-period, fully eclipsing binary system consisting of a star with a temperature comparable to that of the Sun but...
Novae are caused by runaway thermonuclear burning in the hydrogen-rich atmospheres of accreting white dwarfs, which leads to a rapid expansion of the atmosphere...
Light from a Type Ia supernova explosion that created the supernova remnant SNR 0519-69.0 in the Large Magellanic Cloud, a satellite galaxy of the Milky...
With an age of 4.57 billion years, the Sun is currently in its comfortable middle age, fusing hydrogen into helium and generally being rather stable; staid...
Using data from the NOIRLab Source Catalog (NSC) DR2, citizen scientist Frank Kiwy has discovered 34 new M-, L-, or T-type dwarfs comoving with low-mass...
There are different types of supernova explosions. Type Ia supernovae, also known as thermonuclear supernovae, occur in binary star systems. To trigger...
Binary systems have received much attention as possible progenitors of Type Ia supernovae, but long-term gravitational effects in tight triple or quadruple...
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...
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...
Using the ULTRACAM instrument on ESO’s 3.5-m New Technology Telescope and NASA’s Transiting Exoplanet Survey Satellite (TESS), astronomers have observed...
Astronomers using NASA’s Chandra X-ray Observatory have detected five X-ray events from G29-38, which is among the 100 closest white dwarfs. Their results...
Astronomers using the Murchison Widefield Array (MWA) telescope have discovered a spinning object that pulses every 18.18 minutes; they’ve localized...
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...
The NASA/ESA Hubble Space Telescope shot this image of the supernova remnant DEM L249.
This Hubble image shows DEM L249, a remnant of Type Ia supernova...
