Latest Supermassive black holes Stories

Weighing In On Supermassive Black Holes
2013-01-31 20:08:54

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Black holes of any size are mysterious, seemingly breaking through the barriers of the physical laws that guide our Universe. Formed under extreme conditions -- such as the collapse of a massive star, some ten times the mass of our Sun or more -- these objects are very difficult to study under any conditions. Most puzzling are a class of black holes that can range in size from millions to billions of solar masses. Such...

Facts About Black Holes Podcast
2013-01-28 09:23:01

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Click here to stream "Facts About Black Holes — Separating Myth From Reality" (Or right-click on the above link to download the file to your computer) When most people think of a black hole, they tend to envision it as sort of cosmic vacuum cleaner, slowly sucking in and devouring everything in its vicinity. But are black holes really like this? And what would happen if you fell into a black hole? What about a...

How Stars Die And Black Holes Form: Your Universe Today Podcasts
2013-01-23 12:17:54

John P. Millis, Ph.D. for redOrbit.com — Your Universe Online Click here to stream "How Stars Die And Black Holes Form": Your Universe Today Podcasts (Or right-click on the above link to download the file to your computer) Black holes are among the most exotic, mysterious and perplexing objects in the Universe. They are swallowers of light, destroyers of stars and the engines that drive our galaxies. Some believe they could even hold the key to interstellar travel and may perhaps...

New Methods Realized For Imaging The Center Of The Milky Way
2013-01-08 14:22:37

Rayshell Clapper for redOrbit.com - Your Universe Online Astronomers may now have a way to image the center of the Milky Way galaxy, which has posed problems to scientists trying to image all of its exotic features. Soon they may be able to learn more about the features of the center of the Milky Way and learn more about where they are located in the galaxy by use of radio waves. Prior to the discovery of radio waves, astronomers primarily used optical waves like the X-ray and infrared...

How Big Can Black Holes Get?
2012-12-19 07:56:28

Lee Rannals for redOrbit.com - Your Universe Online According to a study using data from NASA's Chandra X-ray Observatory, there may be more ultramassive black holes in the Universe than previously thought. A new analysis has looked at the brightest galaxies in a sample of 18 galaxy clusters in order to target the largest black holes. The scientists' work suggests that at least ten of the galaxies contain an ultramassive black hole, weighing between 10 and 40 billion times the mass...

Cosmic Outflow From Distant Quasar More Powerful Than Ever
2012-11-28 06:09:15

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have reported in The Astrophysical Journal that they have found a quasar with the most energetic outflow ever seen. The quasar, SDSS J1106+1939, is at least five times more powerful than any that have been observed to date. Quasars are bright galactic centers powered by supermassive black holes. These cosmic objects outflows have never been observed as powerful as theorists have predicted, until now. The new study looked...

Thanksgiving Dinner At The Center Of The Galaxy
2012-11-22 10:33:45

[ Watch the Video: The Diner at the Center of the Galaxy ] Lee Rannals for redOrbit.com - Your Universe Online NASA's NuSTAR spacecraft has detected the Milky Way's central black hole eating a Thanksgiving snack. Supermassive black holes like the one in the middle of our galaxy sustain themselves by swallowing stars, planets, asteroids, comets and clouds of gas that wander around the galaxy. The space agency's new spacecraft allowed it to take an observation of the black hole...

Bright Flare In A Black Hole
2012-11-06 19:14:34

Lee Rannals for redOrbit.com — Your Universe Online A team of scientists say they have detected the brightest flare ever observed in our galaxy's black hole. The astronomers used NASA´s Chandra X-Ray Observatory to detect the brightest flare ever observed from Sagittarius A*. The black hole is considered to be low-key, emitting very little energy for its size. It gives off about as much energy as the sun, despite it being 4 billion times as massive. The recent flare is...

Chandra Eyes Mini Supermassive Black Hole
2012-10-25 07:19:58

April Flowers for redOrbit.com - Your Universe Online NASA's Chandra X-ray Observatory, along with other observatories, has identified one of the lowest mass supermassive black holes ever observed in the middle of a galaxy that one would not expect to harbor this type of beast. This suggests that this black hole, while related to its supermassive cousins, may have a different origin. Located in the middle of the spiral galaxy NGC 4178, the black hole is shown in the image from the Sloan...

NuSTAR Picks Up First Black Hole X-ray Flare Up
2012-10-24 10:43:45

Lee Rannals for redOrbit.com — Your Universe Online NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has spotted its first flare from Milky Way's black hole. The new telescope, launched June 13, is the only telescope capable of producing focused images of the highest-energy X-rays, and NASA said it has caught its first look at the black hole. "We got lucky to have captured an outburst from the black hole during our observing campaign," Fiona Harrison, the mission's...

Latest Supermassive black holes Reference Libraries

2004-10-19 04:45:42

Supermassive Black Hole -- A Supermassive black hole is a black hole with a mass in the range of millions or billions solar masses. A supermassive black hole has some interesting properties differing from his low-mass cousins: -- The average density of a supermassive black hole can be very low, and actually can be lower than water's density. This happens because the black hole diameter increases linearly with mass, and consequently density drops much faster. -- Strong tidal...

2004-10-19 04:45:42

Seyfert Galaxy -- Seyfert galaxies are spiral or irregular galaxies containing an extremely bright nucleus, most likely caused by a supermassive black hole, that can sometimes outshine the surrounding galaxy. The light from the central nucleus varies in less than a year, which implies that the emitting region must be less than one light year across. They are named for the astronomer Carl Seyfert, who studied them extensively in the 1940s. They are a subclass of active galactic nuclei....

2004-10-19 04:45:42

Quasar -- A quasar (from quasi-stellar radio source) is an astronomical object that looks like a star in optical telescopes (i.e. it is a point source), but has a very high redshift. The general consensus is that this high redshift is cosmological, the result of Hubble's law and that their redshift indicates that they are typically very distant from Earth; we observe them as they were several billions of years ago. Since we can see them despite their distance, they must emit more...

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Word of the Day
  • An evil spirit; a devil.
  • A nightmare.
  • In astrology, the twelfth house of a scheme or figure of the heavens: so called from its signifying dreadful things, such as secret enemies, great losses, imprisonment, etc.
'Cacodemon' comes from a Greek term meaning 'evil genius.'