Coalescing supermassive black holes in the centers of merging galaxies fill the universe with low-frequency gravitational waves. Astronomers have been searching for these waves by using large radio telescopes to look for ...
Astronomy
Apr 7, 2022
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457
On 9 October 2022 a flash of high-intensity gamma rays was detected by NASA's Swift satellite coming from a galaxy 1.9 billion light-years away. Dubbed the "BOAT"—the "brightest of all time"—GRB 221009A was so exceptionally ...
Astronomy
Jun 16, 2023
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140
(PhysOrg.com) -- These explosions have been puzzling scientists for years: those brief flashes of gamma light can in fact release more energy in a fraction of a second than what our entire galaxy releases in one year – ...
Astronomy
Apr 8, 2011
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An international team of astrophysicists using telescopes on the ground and in space have uncovered surprising changes in radiation emitted by an active galaxy. The picture that emerges from these first-ever simultaneous ...
Astronomy
Mar 18, 2009
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2
An international group of astronomers has detected an unusual nuclear transient in the nucleus of a weakly active galaxy. The new transient was identified by the OGLE-IV Transient Detection System and received designation ...
The infrared observatory Spitzer has been at work for 10 years, revealing the cool dusty regions where stars and planets form, as well as shedding light on planets, exoplanets, stars and galaxies. Spitzer data have brought ...
Astronomy
Oct 1, 2013
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0
(Phys.org)—Black holes range from modest objects formed when individual stars end their lives to behemoths billions of times more massive that rule the centers of galaxies. A new study using data from NASA's Swift satellite ...
Astronomy
Dec 13, 2012
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(Phys.org) -- Researchers may have discovered a new method to predict solar flares more than a day before they occur, providing advance warning to help protect satellites, power grids and astronauts from potentially dangerous ...
Space Exploration
Aug 13, 2012
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Earth gets blasted by mild short gamma-ray bursts (GRBs) most days. But sometimes, a giant flare like GRB 200415A arrives at our galaxy, sweeping along energy that dwarfs our sun. In fact, the most powerful explosions in ...
Astronomy
Jan 13, 2021
0
79
Sometimes it must seem as though reports on releases of radioactive materials from Japan’s Fukushima Daiichi nuclear powerplant in the wake of the devastating earthquake and tsunami are going out of their way to confuse ...
Other
Mar 28, 2011
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