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Recent Articles
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Topic: NASA’s Swift observatory
These collections of ultrahot gas, called black hole coronas, have been known to exhibit noticeable changes in their luminosity, brightening or dimming by up to 100 times as a black hole feeds. ![]() This illustration shows a black hole surrounded by a disk of gas. In the left panel, a streak of debris falls toward the disk. In the right panel, the debris has dispersed some of the gas, causing the corona (the ball of white light above the black hole) to disappear. (NASA/JPL Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Swift Observatory discovers newly created Neutron Star
That’s partly why the recently discovered neutron star known as Swift J1818.0-1607 is remarkable: A new study in the journal Astrophysical Journal Letters estimates that it is only about 240 years old – a veritable newborn by cosmic standards. NASA’s Neil Gehrels Swift Observatory spotted the young object on March 12th, when it released a massive burst of X-rays. ![]() This illustration shows magnetic field lines protruding from a highly magnetic neutron star, or a dense nugget left over after a star goes supernova and explodes. Known as magnetars, these objects generate bright bursts of light that might be powered by their strong magnetic fields. (ESA) «Read the rest of this article» Sections: Technology | No Comments
NASA answers the question, “What Are Black Holes?”
Two main classes of black holes have been extensively observed. Stellar-mass black holes with three to dozens of times the Sun’s mass are spread throughout our Milky Way galaxy, while supermassive monsters weighing 100,000 to billions of solar masses are found in the centers of most big galaxies, ours included. ![]() This simulation of a supermassive black hole shows how it distorts the starry background and captures light, producing a black hole silhouettes. (NASA’s Goddard Space Flight Center; background, ESA/Gaia/DPAC) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Fermi Telescope, Swift Observatory capture highest-energy light every recorded from Gamma Ray Burst
Astronomers first recognized the GRB phenomenon 46 years ago. The blasts appear at random locations in the sky about once a day, on average. ![]() On Jan. 14, 2019, the Major Atmospheric Gamma Imaging Cherenkov (MAGIC) observatory in the Canary Islands captured the highest-energy light every recorded from a gamma-ray burst. MAGIC began observing the fading burst just 50 seconds after it was detected thanks to positions provided by NASA’s Fermi and Swift spacecraft (top left and right, respectively, in this illustration). (NASA/Fermi and Aurore Simonnet, Sonoma State University) «Read the rest of this article» Sections: Technology | No Comments
NASA’s planet hunting TESS Satellite discovers Black Hole ripping apart a Star
“TESS data let us see exactly when this destructive event, named ASASSN-19bt, started to get brighter, which we’ve never been able to do before,” said Thomas Holoien, a Carnegie Fellow at the Carnegie Observatories in Pasadena, California. ![]() This illustration shows a tidal disruption, which occurs when a passing star gets too close to a black hole and is torn apart into a stream of gas. Some of the gas eventually settles into a structure around the black hole called an accretion disk. (NASA’s Goddard Space Flight Center) «Read the rest of this article» Sections: Technology | No Comments
NASA Telescopes discover Electromagnetic waves from a Gravitational Wave SourceNASA’s Goddard Space Flight Center
The discovery was made using data from telescopes including NASA’s Chandra X-ray Observatory, Fermi Gamma-ray Space Telescope, Neil Gehrels Swift Observatory, the NASA/ESA Hubble Space Telescope, and the Discovery Channel Telescope (DCT). ![]() A distant cosmic relative to the first source that astronomers detected in both gravitational waves and light may have been discovered. This object, called GRB150101B, was first detected by identified as a gamma ray burst (GRB) by the NASA’s Fermi satellite in January 2015. (X-ray: NASA/CXC/GSFC/UMC/E. Troja et al.; Optical and infrared: NASA/STScI) «Read the rest of this article» Sections: Technology | No Comments
NASA 2017 HighlightsWritten by Jen Rae Wang / Allard Beutel
One of the numerous NASA-related activities and actions the Trump Administration did in 2017 was to reconstitute the National Space Council. During its first meeting on October 5th, Vice President Mike Pence directed NASA to develop a plan to help extend human exploration across our solar system, and return astronauts to the Moon in preparation for human missions to Mars and other destinations. «Read the rest of this article» Sections: Technology | No Comments
NASA study shows Boyajian Star’s dimness could be caused by DustWritten by Elizabeth Landau
Called KIC 8462852, also known as Boyajian’s Star, or Tabby’s Star, the object has experienced unusual dips in brightness — NASA’s Kepler space telescope even observed dimming of up to 20 percent over a matter of days. In addition, the star has had much subtler but longer-term enigmatic dimming trends, with one continuing today. None of this behavior is expected for normal stars slightly more massive than the Sun. ![]() This illustration depicts a hypothetical uneven ring of dust orbiting KIC 8462852, also known as Boyajian’s Star or Tabby’s Star. (NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA’s NuSTAR Telescope shows Gas, Dust from Merging Galaxies falling into Black HoleWritten by Elizabeth Landau
A merger of two galaxies is one such disruption. As the galaxies combine and their central black holes approach each other, gas and dust in the vicinity are pushed onto their respective black holes. An enormous amount of high-energy radiation is released as material spirals rapidly toward the hungry black hole, which becomes what astronomers call an active galactic nucleus (AGN). ![]() This illustration compares growing supermassive black holes in two different kinds of galaxies. A growing supermassive black hole in a normal galaxy would have a donut-shaped structure of gas and dust around it (left). In a merging galaxy, a sphere of material obscures the black hole (right). (National Astronomical Observatory of Japan) «Read the rest of this article» Sections: Technology | No Comments
NASA discovers Schizophrenic Neutron StarWritten by Elizabeth Landau
A radio pulsar is type of a neutron star — the extremely dense remnant of an exploded star — that emits radio waves in predictable pulses due to its fast rotation. ![]() This artist’s concept shows a pulsar, which is like a lighthouse, as its light appears in regular pulses as it rotates. (NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | 1 Comment »
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