Friday 1 August 2008

Galaxies in the GOODS

Galaxies in the GOODS

Galaxies in the GOODS

This tantalizing view of galaxies scattered near and far is part of theHubble Space Telescope' contributionto the GOODS - theGreat Observatories Origins Deep Survey project The GOODS'goal is to stud galaxyformation and evolution over an unprecedent wide range o cosmicdistances, therefore spannin time fromthe present to the early Universe Joined by th ChandraX-ray Observatory and soon by the anticipate SpaceInfrared Telescope Facilityalong with major ground-basedobservatories, the project expands greatly on the pastHubble Deep Fields of regions in the northern constellation ofUrsa Major and southern constellation Tucana.Across th electromagneticspectrum, a sample o large nearby galaxies,like the interacting pair at the lower left above, will be compared wit distant youngergalaxies in a search for clues to the origins ofthese lighthouses of the cosmos.Preliminary results of the project confirm that the birth rateof stars was higher in the past and that galaxieshave indeed been constructed fromthe "bottom up", growingfrom mergers and accretion of small infant galaxies to theirpresent day forms.

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