The aftermaths of supernovae always produce X-rays, but if the supernova’s blast wave strikes dense surrounding gas, it can produce a particularly large...
Using ESA’s XMM-Newton and NASA’s NuSTAR space telescopes, astronomers have observed X-ray flares emitted from around the supermassive black hole in...
Supernova 1987A (SN 1987A) was first observed on February 23, 1987 in a nearby dwarf galaxy, the Large Magellanic Cloud, some 164,000 light-years away....
An active galactic nucleus in the center of ESO 253-G003, an active galaxy over 570 million light-years away in the southern constellation of Pictor, erupts...
A nova is a sudden, short-lived brightening of an otherwise inconspicuous star. It occurs when a stream of hydrogen from a companion star flows onto the...
Using data from several space- and ground-based telescopes, astronomers have discovered a system of three supermassive black holes within SDSS J084905.51+111447.2,...
Astronomers using NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) have found a remarkable source of X-rays in NGC 6946, a spiral galaxy located...
The Andromeda galaxy (also known as Messier 31) features a dominant source of hard X-rays, but its identity was mysterious until now. An international...
Using data from the Australia Telescope Compact Array, NASA’s Chandra X-ray Observatory and NuSTAR telescope, a team of astronomers has found evidence...
For the first time, researchers have measured rapidly varying temperatures in hot gas flowing from the vicinity of a black hole.
Artist impression illustrating...
ESA’s XMM-Newton mission has spotted a pulsar — a rapidly rotating, magnetized neutron star that sweeps regular pulses of radiation in two symmetrical...
NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) mission has identified two gas-enshrouded supermassive black holes, located at the centers of nearby...
In 2014, NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) and the agency’s Swift satellite observed an X-flare from the supermassive black hole...
Active regions of the Sun are highlighted in this composite image combining observations from a fleet of sun-monitoring satellites: NASA’s NuSTAR (Nuclear...
Using NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) space observatory, astronomers have detected X-rays from five supermassive black holes previously...
New observations of the remnant of Supernova (SN) 1987A from NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) are confirming predictions made at...