Quantcast

Latest Galaxies Stories

Black Holes Need Diet Rich In Stars To Grow
2012-07-20 12:21:35

Lawrence LeBlond for redOrbit.com - Your Universe Online Researchers from several American institutes and agencies have developed a new model showing how an elusive type of black hole can be formed in the gas surrounding their supermassive counterparts. The scientists, from the American Museum of Natural History (AMNH), the City University of New York (CUNY), the Jet Propulsion Laboratory (JPL) of the California Institute of Technology (Caltech), and the Harvard-Smithsonian Center for...

space-070612-004
2012-07-06 12:37:40

Lee Rannals for redOrbit.com - Your Universe Online Astronomers have spotted the first known "middleweight" black hole, according to a publication in Science Express. The black hole was found with a CSIRO radio telescope in a galaxy called ESO 243-49, which is about 300 million light-years away. Before the black hole was found, astronomers had only known of supermassive black holes and "stellar mass" ones. "This is the first object that we're really sure is an intermediate-mass...

Growth Found to be Out of Synch For Black Hole
2012-06-12 11:42:59

New evidence from NASA's Chandra X-ray Observatory challenges prevailing ideas about how supermassive black holes grow in the centers of galaxies. Astronomers long have thought that a supermassive black hole and the bulge of stars at the center of its host galaxy grow at the same rate -- the bigger the bulge, the bigger the black hole. A new study of Chandra data has revealed two nearby galaxies whose supermassive black holes are growing faster than the galaxies themselves. The mass of a...

shutterstock_90296737
2012-06-07 19:11:03

Lee Rannals for redOrbit.com New research published in the journal Monthly Notices of the Royal Astronomical Society indicates that black holes are able to change gears, similar to an engine. Black holes are able to swallow up matter, and return a lot of energy to the Universe in exchange for the mass they eat. When a black hole attracts mass, they trigger the release of intense X-ray radiation and power strong jets.  However, scientists have been baffled because not all black...

Astronomers Catch Supermassive Black Hole Devouring Distant Star
2012-05-02 14:24:52

Lawrence LeBlond for RedOrbit.com [ Watch the Video ] Astronomers have for the very first time captured a supermassive black hole devouring a wandering star that strayed too close to a phenomena that nothing can escape, not even light. Although the star most likely met its demise in an untimely fashion, it is an extraordinary event for science and astronomy, as scientists believe it may provide them with greater clues on the inner workings of dark behemoths nestled away in the hearts...

What Fuels Black Hole Growth?
2012-04-03 04:46:20

"Black holes are very efficient eating machines“¦ They can double their mass in less than a billion years. That may seem long by human standards, but over the history of the Galaxy it's pretty fast,” said Scott Kenyon of the Harvard-Smithsonian Center for Astrophysics (CfA). New research presented by a joint team from the CfA and the University of Utah showed these super-massive star destroyers can balloon in size by absorbing one-half of a binary star system. ...

XMM-Newton Measures The Power Of Black-hole Driven Outflows
2012-02-28 05:01:35

A curious correlation between the mass of a galaxy's central black hole and the velocity of stars in a vast, roughly spherical structure known as its bulge has puzzled astronomers for years. An international team led by Francesco Tombesi at NASA's Goddard Space Flight Center in Greenbelt, Md., now has identified a new type of black-hole-driven outflow that appears to be both powerful enough and common enough to explain this link. Most big galaxies contain a central black hole weighing...

Abell Galaxy Cluster Harbors Sloshing Clouds Of Gas
2012-01-31 05:00:32

A Naval Research Laboratory scientist is part of a team that has recently discovered that vast clouds of hot gas are "sloshing" in Abell 2052, a galaxy cluster located about 480 million light years from Earth. The scientists are studying the hot (30 million degree) gas using X-ray data from NASA's Chandra X-ray Observatory and optical data from the Very Large Telescope to see the galaxies. "The X-ray images were amazing. We were able to see gas sloshing like liquid in a glass" explains...

Image 1 - Gas Cloud En Route To Milky Way's Black Hole
2011-12-15 05:40:29

[ Video 1 ] | [ Video 2 ] | [ Video 3 ] | The massive black hole at the center of our Milky Way Galaxy is destined to be invaded by a gas cloud, creating a violent encounter, according to astronomers. The supermassive black hole in the Milky Way is close enough for astronomers to study in detail, so the encounter could provide a unique chance for scientist to observe what until now has only been theorized. The astronomers plan to find out how a black hole eats up gas, dust and stars...


Latest Galaxies Reference Libraries

6_8304cd2002012eb0093845e374a1b9612
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...

More Articles (1 articles) »
Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
Related