Primordial black holes (PBHs) are fascinating cosmic bodies that have been widely investigated by astrophysicists worldwide. As suggested by their name, these are black holes believed to have appeared in the universe's early ...
A group of astronomers led by Sarah Bosman from the Max Planck Institute for Astronomy have robustly timed the end of the epoch of reionization of the neutral hydrogen gas to about 1.1 billion years after the Big Bang. Reionization ...
Astronomy
Jun 8, 2022
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An international team of astronomers has unveiled the nature of hundreds of gamma-ray emitting sources, discovering that most of them belong to the class of active galaxies known as blazars.
Astronomy
Oct 11, 2021
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For decades astronomers have been spotting bursts of electromagnetic radiation coming from black holes. They assumed those are the result of stars being torn apart, but they have never seen the silhouette of the actual material ...
Astronomy
Apr 23, 2021
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Red giant stars are, well, red and giant. But astronomers have always had difficulty estimating their temperatures due to their complex and turbulent atmospheres. Without an accurate gauge of their temperatures, it's difficult ...
Astronomy
Mar 15, 2021
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Red supergiants are a class of star that end their lives in supernova explosions. Their lifecycles are not fully understood, partly due to difficulties in measuring their temperatures. For the first time, astronomers have ...
Astronomy
Mar 1, 2021
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Recent observations of Betelgeuse have revealed that the star's unexpected and significant dimming periods in late 2019 and early 2020 were most likely caused by the ejection and cooling of dense hot gases, and that the star ...
Astronomy
Aug 13, 2020
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Astronomers have cataloged signs of nine heavy metals in the infrared light from supergiant and giant stars. New observations based on this catalog will help researchers to understand how events like binary neutron star mergers ...
Astronomy
Jan 9, 2020
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For this image, the NASA/ESA Hubble Space Telescope turned its powerful eye toward an emission-line galaxy called NGC 3749.
Astronomy
Nov 22, 2019
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The Cygnus Loop (also known as the Veil Nebula) is a supernova remnant, the detritus of the explosive death of a massive star about ten to twenty thousand years ago. Detailed modeling of its spectacular filamentary shape ...
Astronomy
Nov 27, 2018
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