ESA Hubble: Forming the present-day spiral galaxies

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ESA Hubble: Forming the present-day spiral galaxies

Post by bystander » Thu Feb 04, 2010 5:31 pm

http://www.spacetelescope.org/news/html/heic1002.html
ESA Hubble News Release: heic1002 (2010 Feb 04)
Using data from the NASA/ESA Hubble Space Telescope, astronomers have, for the first time, created a demographic census of galaxy types and shapes from a time before the Earth and the Sun existed, to the present day. The results show that, contrary to contemporary thought, more than half of the present-day spiral galaxies had so-called peculiar shapes only 6 billion years ago, which, if confirmed, highlights the importance of collisions and mergers in the recent past of many galaxies. It also provides clues for the unique status of our own galaxy, the Milky Way.
http://www.spacetelescope.org/images/sc ... c1002a.jpg

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Re: ESA Hubble News: Forming the present-day spiral galaxies

Post by bystander » Fri Feb 05, 2010 4:04 pm


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S&T: Spiral Galaxies Exist — But Why?

Post by bystander » Tue Feb 16, 2010 5:26 pm

Spiral Galaxies Exist — But Why?
Sky & Telescope - 2010 Feb 16