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News articles tagged with 'galaxy'

[chronologically, reverse order]

Swift, XMM-Newton satellites tune into a middleweight black hole

— 11 Nov 2009 14:03 | Astronomy

While astronomers have studied lightweight and heavyweight black holes for decades, the evidence for black holes with intermediate masses has been much harder to come by. Now, astronomers... — full story

Rapid star formation spotted in 'stellar nurseries' of infant galaxies

— 11 Nov 2009 11:18 | Astronomy

The Universe's infant galaxies enjoyed rapid growth spurts forming stars like our sun at a rate of up to 50 stars a year, according to scientists at Durham University... — full story

'Dropouts' pinpoint earliest galaxies

— 8 Nov 2009 12:13 | Astronomy

Astronomers, conducting the broadest survey to date of galaxies from about 800 million years after the Big Bang, have found 22 early galaxies and confirmed the age of one by its characteristic... — full story

Shedding light on the cosmic skeleton

— 3 Nov 2009 11:50 | Astronomy

'Matter is not distributed uniformly in the Universe,' says Masayuki Tanaka from ESO, who led the new study. 'In our cosmic vicinity, stars form in galaxies and galaxies usually form... — full story

Galaxy cluster smashes distance record

— 26 Oct 2009 16:28 | Astronomy

The most distant galaxy cluster yet has been discovered by combining data from NASA's Chandra X-ray Observatory and optical and infrared telescopes. The cluster is located about 10.2... — full story

Astronomers obtained this portrait of Barnard's Galaxy using the Wide Field Imager attached to the 2.2-metre MPG/ESO telescope at ESO's La Silla Observatory in northern Chile. Also known as NGC 6822, this dwarf irregular galaxy is one of the Milky Way's galactic neighbours. The dwarf galaxy has no shortage of stellar splendour and pyrotechnics. Reddish nebulae in this image reveal regions of active star formation, wherein young, hot stars heat up nearby gas clouds. Also prominent in the upper left of this new image is a striking bubble-shaped nebula. At the nebula's centre, a clutch of massive, scorching stars send waves of matter smashing into surrounding interstellar material, generating a glowing structure that appears ring-like from our perspective. Other similar ripples of heated matter thrown out by feisty young stars are dotted across Barnard's Galaxy, (c) ESOThe Milky Way's tiny but tough galactic neighbour

— 14 Oct 2009 12:16 | Astronomy

In the new ESO image, Barnard's Galaxy glows beneath a sea of foreground stars in the direction of the constellation of Sagittarius (the Archer). At the relatively close distance of... — full story

Not surprisingly, interacting galaxies have a dramatic effect on each other. Studies have revealed that as galaxies approach one another massive amounts of gas are pulled from each galaxy towards the centre of the other, until ultimately, the two merge into one massive galaxy. NGC 2623 is in the late stages of the merging process, with the centres of the original galaxy pair now merged into one nucleus, but stretching out from the centre are two tidal tails of young stars, a strong indicator that a merger has taken place. During such a collision, the dramatic exchange of mass and gases initiates star formation, seen here in both the tails. The prominent lower tail is richly populated with bright star clusters - 100 of them have been found in these observations. These star clusters may have formed as part of a loop of stretched material associated with the northern tail, or they may have formed from debris falling back onto the nucleus. In addition to this active star-forming region, both galactic arms harbour very young stars in the early stages of their evolutionary journey, (c) NASA, ESA and A. Evans (Stony Brook University, New York)Sky merger yields sparkling dividends

— 13 Oct 2009 10:21 | Astronomy

A recent NASA/ESA Hubble Space Telescope image captures what appears to be one very bright and bizarre galaxy, but is actually the result of a pair of spiral galaxies that resemble... — full story

Heart of a galaxy emits gamma rays

— 3 Oct 2009 09:36 | Astronomy

Quite a few distant galaxies turn out to be cosmic delivery rooms. Large numbers of massive stars are born in the hearts of these starburst galaxies, and later explode as supernovae.... — full story

Reservoir of cold gas in the constellation of the Southern Cross, (c) ESA and the SPIRE and PACS consortiaHerschel views deep-space pearls on a cosmic string

— 3 Oct 2009 09:21 | Astronomy

Herschel has delivered spectacular vistas of cold gas clouds lying near the plane of the Milky Way, revealing intense, unexpected activity. The dark, cool region is dotted with stellar... — full story

A new search for dark energy begins

— 2 Oct 2009 10:20 | Astronomy

The most ambitious attempt yet to trace the history of the universe has seen 'first light.' The Baryon Oscillation Spectroscopic Survey (BOSS), a part of the Sloan Digital Sky Survey... — full story

News articles tagged with 'galaxy' — 212
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