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Latest Galaxies Stories

Space Slinky Video Compiled From Hubble Images
2013-08-23 04:04:14

[ Watch the Video: Hubble Takes Movies of Space Slinky ] redOrbit Staff & Wire Reports - Your Universe Online Astronomers are hoping to gain new insight in the role that black holes play in galaxy evolution thanks to a new series of time-lapse movies compiled from over a decade’s worth of observations from NASA’s Hubble Space Telescope. The video footage shows what experts have dubbed a “space slinky” – a 5,000 light-year-long jet of superheated gas being ejected from a...

2013-08-22 12:21:52

WASHINGTON, Aug. 22, 2013 /PRNewswire-USNewswire/ -- Astronomers have assembled, from more than 13 years of observations from NASA's Hubble Space Telescope, a series of time-lapse movies showing a jet of superheated gas -- 5,000 light-years long -- as it is ejected from a supermassive black hole. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The movies promise to give astronomers a better understanding of how black holes shape galaxy evolution. "Central,...

Cosmic Turbulence Black Hole Formation
2013-08-16 09:31:01

John P. Millis, PhD for redOrbit.com - Your Universe Online The mechanism by which stars and black holes are formed in extreme cases of high mass density has puzzled astronomers since Johannes Kepler first laid out his laws of planetary motion some 400 years ago. In the most basic sense, a large cloud of gas condenses into a rotating disk. Mass is then directed towards the center of the cloud where, due to the increasing density, a stellar body is eventually formed. One challenge to...

Highly Magnetized Pulsar At Galactic Center
2013-08-14 12:20:25

John P. Millis, PhD for redOrbit.com - Your Universe Online At the center of the Milky Way lurks a supermassive black hole known as Sagittarius A*, with some four million times the mass of our Sun. More than any single object, it has the greatest impact on the formation, evolution and fate of our galaxy. However, probing this massive object is difficult. Due to the nature of black holes, most of what we learn about their existence is derived by observing their influence on other nearby...

Old Age Makes Monster Galaxies Picky Eaters
2013-08-02 13:32:17

Brett Smith for redOrbit.com - Your Universe Online A new analysis from scientists at NASA's Jet Propulsion Laboratory (JPL) revealed that supermassive galaxies have stopped cannibalizing their neighbors over the past few billion years. The finding calls current models for galactic growth into question. "We've found that these massive galaxies may have started a diet in the last 5 billion years, and therefore have not gained much weight lately," said Yen-Ting Lin of the Academia Sinica...

Unraveling Galactic History Begins With A Black Hole's Spin
2013-07-30 14:11:38

Brett Smith for redOrbit.com - Your Universe Online A supermassive black hole is believed to sit at the center of each large galaxy, and a new technique designed to detect the dark abyss' spin could be the key to unraveling a galaxy's history. While black holes cannot be seen directly, their behavior can be determined by looking at how they affect nearby objects. A paper published in Monthly Notices of the Royal Astronomical Society describes a new technique that was developed by...

Mystery Missing Massive Galaxies
2013-07-24 13:28:57

[ Watch the Video: Three-Dimensional View of NGC 253 ] Lee Rannals for redOrbit.com - Your Universe Online New observations have given a group of astronomers the best view yet of how star formation regions can get selfish and gassy. Astronomers using the European Southern Observatory's (ESO) ALMA telescope in Chile say they have discovered how vigorous star formation in a galaxy can blast gas out of it and deprive future generations of stars of the fuel they need to form and grow....

Milky Way Black Hole Rips Apart Gas Cloud
2013-07-17 10:54:47

[ Watch the Video: Simulation of Gas Cloud Being Ripped Apart By Black Hole ] Lee Rannals for redOrbit.com - Your Universe Online The European Southern Observatory's (ESO) Very Large Telescope (VLT) has helped astronomers catch a supermassive black hole ripping apart a gas cloud for the first time. Astronomers writing in the Astrophysical Journal say the gas cloud being ripped apart by the Milky Way's supermassive black hole is now so stretched that its front portion has passed the...

Monstrous Stellar Collisions Not Expected To Occur Anytime Soon
2013-07-11 14:32:31

Lee Rannals for redOrbit.com - Your Universe Online Astrophysicists from the Astronomical Observatory of the Faculty of Physics at the University of Warsaw say the next collision of monstrous stars will not occur until billions of years from now. Three years ago, scientists discovered that the Magellanic Clouds host gigantic stars with between 200 and 300 times the solar mass  of our own Sun. Before then, astronomers believed that the biggest stars in the Universe did not...

Aircraft Telescope Images Ring Of Dust Surrounding Black Hole
2013-07-10 13:34:10

Lee Rannals for redOrbit.com - Your Universe Online Astronomers using a telescope attached to a modified Boeing 747SP aircraft have captured new images of a ring of gas and dust seven light-years in diameter surrounding the super-massive black hole at the center of the Milky Way. The team used NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) to capture images of our galaxy's circumnuclear ring (CNR), as well as a neighboring cluster of extremely luminous young stars known...


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...

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