X-ray astronomy is the research area focused on detecting, imaging, and spectroscopically analyzing cosmic sources of X-ray photons, typically in the energy range of ~0.1–100 keV. Because Earth’s atmosphere is opaque to X-rays, this field relies on space-based observatories employing grazing-incidence optics, focusing telescopes, and high-resolution detectors such as CCDs, microcalorimeters, and proportional counters. X-ray astronomy probes high-energy astrophysical processes, including accretion onto compact objects, hot intracluster gas, supernova remnants, stellar coronae, and relativistic jets, enabling quantitative studies of extreme environments, plasma conditions, strong gravity, and energetic feedback in galaxies and large-scale structure.
Technion researchers have presented evidence for the existence of solar-storm-like outbursts near supermassive black holes, which can be a million times larger than the sun or more. The phenomenon was discovered in the vicinity ...
Astronomy
Oct 22, 2026
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Some supermassive black holes rapidly consume surrounding matter while simultaneously firing powerful streams of plasma into space at nearly the speed of light. However, this creates a physical puzzle: rapid feeding is expected ...
Astronomy
Oct 20, 2026
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Astronomers have discovered a star being torn apart by a massive black hole more than 1,000 parsecs from the center of its host galaxy. The tidal disruption event, TDE 2023mfm, was first discovered by ZTF and then studied ...
Astronomers have used NASA's Chandra X-ray Observatory to break down the cause of a remarkable formation of radio waves they have nicknamed the "Treble Clef" because its distinct shape strongly resembles the musical symbol.
Astronomy
Oct 15, 2026
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The center of the Milky Way galaxy is a chaotic place. In addition to the 4-million-solar-mass black hole known as Sagittarius A* (Sgr A*), the region is full of gas, dust, strong magnetic fields and stars in various stages ...
Astronomy
Oct 1, 2026
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Understanding the origin, acceleration and propagation of high-energy cosmic rays has been a century-old mystery in astrophysics. Recently, joint observations from China's Einstein Probe (EP) satellite and the Large High ...
Astronomy
Sep 22, 2026
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Using data from the Japan–led XRISM (X-ray Imaging and Spectroscopy Mission) observatory, astronomers have directly observed a giant star's outflow, called a stellar wind, being captured by its compact companion and providing ...
Astronomy
Sep 21, 2026
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A distant star has captured astronomers' attention over the past decade, teasing them with indications that it will soon explode as a supernova. But new research shows that something else entirely is behind the star's outbursts. ...
Astronomy
Sep 13, 2026
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The eROSITA (extended ROentgen Survey with an Imaging Telescope Array) telescope, the primary instrument aboard the Russian-German Spektr-RG space observatory, was developed by the Max Planck Institute for Extraterrestrial ...
Astronomy
Sep 11, 2026
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Using NASA's Chandra X-ray Observatory, scientists have discovered a new class of objects behaving unlike any they have seen before. Astronomers suggest these newly spotted objects in other galaxies may help solve not one, ...
Astronomy
Sep 9, 2026
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