News tagged with galaxy formation

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Do black holes help stars form?

(PhysOrg.com) -- The center of just about every galaxy is thought to host a black hole, some with masses of thousands of millions of Suns and consequently strong gravitational pulls that disrupt material around ...

dateFeb 03, 2012 in Astronomy
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Hubble catches the moment the lights went out

(Phys.org)—The further away you look, the further back in time you see. Astronomers use this fact to study the evolution of the Universe by looking at nearby and more distant galaxies and comparing their ...

dateFeb 06, 2013 in Astronomy
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The rise and fall of galactic cities

(Phys.org) —In the fable of the town and country mice, the country mouse visits his city-dwelling cousin to discover a world of opulence. In the early cosmos, billions of years ago, galaxies resided in ...

dateDec 19, 2013 in Astronomy
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Ultra-luminous X-ray sources in starburst galaxies

Ultra-luminous X-ray sources (ULXs) are point sources in the sky that are so bright in X-rays that each emits more radiation than a million suns emit at all wavelengths. ULXs are rare. Most galaxies (including ...

dateDec 22, 2014 in Astronomy
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The answer is blowing in the intergalactic wind

Astronomers from the University of Toronto and the University of Arizona have provided the first direct evidence that an intergalactic "wind" is stripping galaxies of star-forming gas as they fall into clusters ...

dateNov 13, 2014 in Astronomy
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An old-looking galaxy in a young universe

A team of astronomers, led by Darach Watson, from the University of Copenhagen used the Very Large Telescope's X-shooter instrument along with the Atacama Large Millimeter/submillimeter Array (ALMA) to observe ...

dateMar 02, 2015 in Astronomy
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Galactic clusters low on hydrogen

Astronomers at Swinburne University of Technology and their international collaborators have found evidence that galaxies that are located in groups might be running out of gas.

dateNov 25, 2013 in Astronomy
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