News tagged with dwarf galaxies

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Death by black hole in small galaxy?

( —A bright, long-duration flare may be the first recorded event of a black hole destroying a star in a dwarf galaxy. The evidence comes from two independent studies using data from NASA's Chandra X-ray Observatory ...

dateJan 08, 2014 in Astronomy
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The galaxy's ancient brown dwarf population revealed

( —A team of astronomers led by Dr David Pinfield at the University of Hertfordshire have discovered two of the oldest brown dwarfs in the Galaxy. These ancient objects are moving at speeds of 100-200 kilometres ...

dateNov 20, 2013 in Astronomy
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Image: Hot gas sloshing in a galactic cauldron

( —Galaxies are social beasts that are mostly found in groups or clusters – large assemblies of galaxies that are permeated by even larger amounts of diffuse gas. With temperatures of 10 million degrees or more, ...

dateNov 19, 2013 in Astronomy
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Hubble sees stars fleeing a cosmic crash

( —Astronomical pictures sometimes deceive us with tricks of perspective. Right in the center of this image, two spiral galaxies appear to be suffering a spectacular collision, with a host of stars appearing to ...

dateAug 19, 2013 in Astronomy
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Dwarf galaxy caught ramming into a large spiral

Observations with NASA's Chandra X-ray Observatory have revealed a massive cloud of multimillion-degree gas in a galaxy about 60 million light years from Earth. The hot gas cloud is likely caused by a collision between a ...

dateAug 14, 2013 in Astronomy
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Hubble finds source of Magellanic Stream

( —Astronomers using the NASA/ESA Hubble Space Telescope have solved the 40-year-old mystery of the origin of the Magellanic Stream, a long ribbon of gas stretching nearly halfway around the Milky Way. New Hubble ...

dateAug 08, 2013 in Astronomy
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Hubble finds telltale fireball after gamma ray burst

( —NASA's Hubble Space Telescope has provided the strongest evidence yet that short-duration gamma-ray bursts are triggered by the merger of two small, super-dense stellar objects, such as a pair of neutron stars ...

dateAug 03, 2013 in Astronomy
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