News tagged with dwarf galaxies

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Gaia discovers its first supernova

(Phys.org) —While scanning the sky to measure the positions and movements of stars in our Galaxy, Gaia has discovered its first stellar explosion in another galaxy far, far away.

dateSep 12, 2014 in Astronomy
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This star cluster is not what it seems

This new image from the VLT Survey Telescope in northern Chile shows a vast collection of stars, the globular cluster Messier 54. This cluster looks similar to many others but it has a secret. Messier 54 doesn't belong to ...

dateSep 10, 2014 in Astronomy
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Satellite galaxies put astronomers in a spin

An international team of researchers, led by astronomers at the Observatoire Astronomique de Strasbourg (CNRS/Université de Strasbourg), has studied 380 galaxies and shown that their small satellite galaxies almost always ...

dateJul 24, 2014 in Astronomy
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Image: Hubble looks into Terzan 7

Named after its discoverer, the French-Armenian astronomer Agop Terzan, this is the globular cluster Terzan 7—a densely packed ball of stars bound together by gravity. It lies just over 75,000 light-years away from us on ...

dateFeb 17, 2014 in Astronomy
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Death by black hole in small galaxy?

(Phys.org) —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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Image: Hot gas sloshing in a galactic cauldron

(Phys.org) —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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