Galaxy hosting most distant supermassive black hole ever foundSeptember 3rd, 2009 WASHINGTON - A team of astronomers from the University of Hawaii has discovered a giant galaxy surrounding the most distant supermassive black hole ever found. The galaxy, which is 12.8 billion light-years from Earth, is as large as the Milky Way galaxy and harbors a supermassive black hole that contains at least a billion times as much matter as does our Sun.
Stars in early galaxies whizzed around at astonishingly high speedsAugust 7th, 2009 WASHINGTON - A team of astronomers has measured the motions of stars in a very distant galaxy for the first time and discovered they are whizzing around at astonishingly high speeds. A team from Yale University, UK, spent an unprecedented 29 hours observing the galaxy with one of the largest telescopes on Earth-the Gemini South Telescope in Chile-to collect enough light to determine how fast its stars are moving.
Astronomers detect hyperactive galaxies by looking back 11 bln yrs into the pastAugust 6th, 2009 WASHINGTON - Looking almost 11 billion years into the past, astronomers have measured the motions of stars for the first time in a very distant galaxy and clocked speeds upwards of one million miles per hour, about twice the speed of our Sun through the Milky Way. The fast-moving stars shed new light on how these distant galaxies, which are a fraction the size of our Milky Way, may have evolved into the full-grown galaxies seen around us today.
Astronomers discover rare 'Green Pea' galaxiesJuly 28th, 2009 WASHINGTON - A team of astronomers has discovered a group of rare galaxies called the "Green Peas", which could lend unique insights into how galaxies form stars in the early universe. The galaxies were discovered with the help of citizen scientists working through an online project called Galaxy Zoo.
Scientist uses new instrument to dissect nearby galaxies to learn how stars formJuly 10th, 2009 WASHINGTON - A scientist is using a new instrument at the University of Texas at Austin's McDonald Observatory to dissect nearby galaxies to learn how stars form, and in the process, generating a flood of new information that will benefit other scientists' work. The scientist in question is University of Texas at Austin graduate student Guillermo A.
Astronomers see high-speed galaxy collision in actionJuly 10th, 2009 WASHINGTON - Astronomers at the Chandra X-ray Observatory have spotted a galaxy collision in action, with one galaxy passing through the core of other galaxies at almost 2 million miles per hour. The image obtained is of Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located about 280 million light years from Earth.
Largest ever survey of very distant galaxy clusters completedJuly 1st, 2009 WASHINGTON - An international team of researchers led by a UC (University of California) Riverside astronomer has completed the largest ever survey designed to find very distant clusters of galaxies. Named the Spitzer Adaptation of the Red-sequence Cluster Survey, "SpARCS" detects galaxy clusters using deep ground-based optical observations from the CTIO 4m and CFHT 3.6m telescopes, combined with Spitzer Space Telescope infrared observations.
Weird space blobs turn out to be adolescent galaxies throwing final tantrum before growing upJune 24th, 2009 Telescope finds space blobs are pubescent galaxiesWASHINGTON — Mysterious space blobs aren't infant galaxies as astronomers once thought. Scientists say they mostly consist of galaxies going through puberty, all hot and bothered.
Black hole discovered to be 3 times more massive than previously thoughtJune 9th, 2009 WASHINGTON - Astronomers have used new computer modeling techniques to discover that the black hole at the heart of M87, one the largest nearby giant galaxies, is two to three times more massive than previously thought. The astronomers were Karl Gebhardt from the University of Texas at Austin and Jens Thomas from the Max Planck Institute for Extraterrestrial Physics in Germany.
Clear images of starburst galaxies reveal new picture of early universeMay 28th, 2009 WASHINGTON - A telescope designed by a University of Miami physicist and an international team of collaborators has produced the clearest images of starburst galaxies, revealing a new picture of the universe in its early stages. The innovative new telescope, called BLAST (Balloon-borne Large-Aperture Sub-millimeter Telescope), was built by an international research team, which included Joshua Gundersen, University of Miami professor of physics in the College of Arts and Sciences.
Starbursts in dwarf galaxies last 100 times longer than astronomers thoughtMay 1st, 2009 WASHINGTON - An analysis of archival images of small, or dwarf, galaxies taken by NASA's Hubble Space Telescope suggests that starbursts, intense regions of star formation, sweep across the whole galaxy and last 100 times longer than astronomers thought. The longer duration may affect how dwarf galaxies change over time, and therefore may shed light on galaxy evolution.
Scientists discover mysterious 'space blob' at cosmic dawnApril 23rd, 2009 WASHINGTON - Using information from a suite of telescopes, astronomers have discovered a mysterious, giant 'space blob' that existed at a time when the universe was only about 800 million years old. Dubbed extended Lyman-Alpha blobs, such objects are huge bodies of gas that may be precursors to galaxies.
When mammoth galaxy clusters collide in a 'cosmic free-for-all'April 17th, 2009 WASHINGTON - By combining information from three different telescopes, scientists are learning what happens when some of the largest galaxy clusters in the Universe collide with each other in a cosmic free-for-all. Galaxy clusters are the largest objects bound by gravity in the Universe.
Discovery of recently formed galaxies poses challenge to galaxy formation theoriesApril 11th, 2009 WASHINGTON - A team of astronomers has found a sample of massive galaxies with properties that suggest they may have formed relatively recently, a discovery that poses challenge to galaxy formation theories. This runs counter to the widely-held belief that massive, luminous galaxies (like our own Milky Way Galaxy) began their formation and evolution shortly after the Big Bang, some 13 billion years ago.
Hubble provides new evidence for dark matter around small galaxiesMarch 13th, 2009 WASHINGTON - The NASA/ESA Hubble Space Telescope has uncovered a strong new line of evidence that halos of dark matter are embedded around small galaxies. Looking into the turbulent center of the nearby Perseus galaxy cluster, Hubble discovered a large population of small galaxies that have remained intact while larger galaxies around them are being ripped apart by the gravitational tug of other galaxies.