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Mysterious Dance Of Dwarf Galaxies May Force A Cosmic

Mysterious Dance Of Dwarf Galaxies May Force A Cosmic Rethink

Verity Leatherdale, University of Sydney The discovery that many small galaxies throughout the universe do not 'swarm' around larger ones like bees do but 'dance' in orderly disc-shaped orbits is a challenge to our understanding of how the...

Latest Dwarf galaxy Stories

Solving The Long-standing Mystery Surrounding The Evolution Of Galaxies
2014-07-08 03:29:57

[ Watch The Video: A Simulated Dwarf Galaxy 800 Million Years After The Big Bang ] The University of Sheffield New research by academics at the University of Sheffield has solved a long-standing mystery surrounding the evolution of galaxies, deepening our understanding of the future of the Milky Way. The supermassive black holes in the cores of some galaxies drive massive outflows of molecular hydrogen gas. As a result, most of the cold gas is expelled from the galaxies. Since...

milky way simulation
2014-07-07 07:13:31

Royal Astronomical Society (RAS) Astronomers investigating behavior of the universe shortly after the Big Bang have made a surprising discovery: the properties of the early universe are determined by the smallest galaxies. The team report their findings in a paper published today in the journal Monthly Notices of the Royal Astronomical Society. Shortly after the Big Bang, the universe was ionized: ordinary matter consisted of hydrogen with its positively charged protons stripped of...

Scientists Reformulate Their Knowledge Of Dark Matter
2014-07-04 09:21:15

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online For decades, the mystery of Dark Matter has been at the forefront of physics research. Since the 1930s, scientists have been aware that all of the mass that we can see – the stars, the dust, the planets, and black holes – makes up only 20% of the Universe. The rest, it seems, is made of some other form of matter; something different than the protons, neutrons, and electrons that we are most familiar with. There were many...

Umbrella Galaxy
2014-07-03 04:44:09

April Flowers for redOrbit.com - Your Universe Online Astronomers are hoping to gain a new understanding of how galaxies grow from watching a distant “twin” of the Milky Way as it is swallowing another galaxy. Dr. Caroline Foster of the Australian Astronomical Observatory (AAO) led the team that has been studying NCG 4651, called the Umbrella galaxy for the “parasol” of stars that are all that remain of the galaxy being consumed. Umbrella can be found approximately 62 million...

Dwarf Galaxies Formed More Than Their Fair Share Of Universe's Stars
2014-06-19 03:05:21

[ Watch The Video: Hubblecast 75: Dwarf Galaxies That Pack a Punch ] NASA They may be little, but they pack a big star-forming punch. New observations from NASA's Hubble Space Telescope show small galaxies, also known as dwarf galaxies, are responsible for forming a large proportion of the universe's stars. Studying this early epoch of the universe's history is critical to fully understanding how these stars formed and how galaxies grew and evolved 3.5 to 6 billion years after the...

2014-06-19 08:21:52

WASHINGTON, June 19, 2014 /PRNewswire-USNewswire/ -- They may be little, but they pack a big star-forming punch. New observations from NASA's Hubble Space Telescope show small galaxies, also known as dwarf galaxies, are responsible for forming a large proportion of the universe's stars. http://photos.prnewswire.com/prnvar/20081007/38461LOGO Studying this early epoch of the universe's history is critical to fully understanding how these stars formed and how galaxies grew and evolved...

Neighboring Satellite Dwarf Galaxies Do Not Fit The Standard Model
2014-06-11 07:37:40

Lawrence LeBlond for redOrbit.com - Your Universe Online An international team of scientists have found that dwarf satellite galaxies that orbit the Milky Way and neighboring Andromeda galaxy defy the standard model of galaxy formation. As well, recent attempts to fit them into the model have been flawed, raising questions about the accuracy of the standard model of cosmology, which has been the long accepted concept for the origin and evolution of the universe. In a paper to be...

Magellan Telescopes at Las Campanas Observatory
2014-05-02 04:46:11

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online In the normal course of evolution, galaxies initially formed stars as clouds of hydrogen and helium collapsed. Eventually the density and temperature of the cores would ignite nuclear fusion, allowing them to shine during what we call the main sequence phase of their lives. Eventually, stars will fuse heavier and heavier elements, with stars like our sun eventually culminating as balls of carbon and oxygen – in varying...

dwarf galaxy NGC 4395
2014-03-27 04:42:05

redOrbit Staff & Wire Reports - Your Universe Online While experts might not know exactly how supermassive black holes grow to sizes up to a billion times that of our sun, astronomers using NASA’s Wide-field Infrared Survey Explorer (WISE) believe they have discovered the so-called cosmic seeds that will ultimately become gravity-rich regions from which light cannot escape. Black holes come in various sizes, with the smallest ones only a few times greater in mass than our sun and...

Andromeda galaxy
2014-02-24 04:27:39

redOrbit Staff & Wire Reports - Your Universe Online An international team of astronomers studying the satellite galaxies surrounding Andromeda has for the first time observed the remnant of a merger between two low-mass dwarf galaxies, according to new research published online Sunday in the journal Nature. The study authors, who hail from the Niels Bohr Institute at the University of Copenhagen, the University of Cambridge’s Institute of Astronomy and the Max Planck Institute...


Latest Dwarf galaxy Reference Libraries

45_9843bacae4e6aaccde9ad6442185fc8e
2010-09-16 15:14:03

The two Magellanic Clouds (or Nubeculae Magellani), composed of the Large Megellanic Cloud and the Small Magellanic Cloud, are irregular dwarf galaxies visible in the southern hemisphere. They are members of our Local Group and orbit the Milky Way galaxy. Persian astronomer Al Sufi, in 964, was the first to have written anything about the Magellanic Clouds proving they have been known since early time amongst the Middle East peoples. Sufi, in his Book of Fixed Stars, calls the clouds...

67_62ac767a66aa75de2afaba1deb05cb8c
2010-09-13 17:05:00

The Local Group, compromising more than 30 galaxies (including dwarf galaxies and the Milky Way), is a group of galaxies with a gravitational center located somewhere between the Milky Way and the Andromeda Galaxy. With a binary (dumbbell) shape and a total mass of (1.29 ± 0.14) × 1012M the Local group covers a 10 million light-year diameter. The local group is part of the Virgo Supercluster. The two largest galaxies in the group are the Milky Way and the Andromeda both Spiral...

45_514eb9ddeca5aebff501a32cd2942949
2010-09-07 17:44:03

Within the Hydra, Centaurus, and Virgo constellations a complex group of galaxies resides called Centaurus A/M83. There are two subgroups within Centaurus A/M83. The first is Cen A, at a distance of 11.9 Million Light Years, is centered around Centaurus A, a close by radio galaxy. The other subgroup, M83, is at a distance of 14.9 Million Light Years and is centered around the Messier 83. Since there are two subgroups Centaurus is sometimes identified as one group and sometimes two, it will be...

45_274ba7ddcce89663fc213d79e864e44b
2010-09-07 17:03:18

The Abell 520 galaxy cluster is an strange structure formed by a major merger. Due to its odd and chaotic nature it has been given the nick-name the Train Wreck Cluster. The Dark Matter within the cluster does not act as expected like it does in other clusters, therefore, Abell 520 creates problems for many of the prevailing theories about Dark Matter. It also disrupts many alternative theories of modified gravity. Similar to the Bullet Cluster the gas contents and galaxies within the...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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