A massive project to map a distant region of the Universe in multiple wavelengths--from x-rays through ultraviolet, visible, infrared, and radio waves--is releasing its data this week to both fellow scientists and the general public. It is the first data release from the AEGIS survey and the first release of multi-wavelength data to take advantage of the capabilities of Google Sky. The AEGIS collaboration is also making all of its data available this week on its web site. The KML file and instructions for viewing the AEGIS images are also available.
AEGIS survey reveals new principle governing galaxy formation and evolution Faced with the bewildering array of galaxies in the universe, from orderly spirals to chaotic mergers, it is hard to imagine a unifying principle that describes them all with mathematical precision. But that is just what astronomers have now discovered. The relation between a galaxy's mass and the orbital speed of its stars and gas is remarkably consistent over a wide range of galaxy morphologies and over billions of years of galaxy evolution, according to new results from a major survey of distant galaxies. The findings show that certain fundamental properties of galaxies have actually changed very little over the past 8 billion years (about half the age of the universe).
Hundreds of images snapped by the Hubble Space Telescope have been woven together to create a rich tapestry of thousands of galaxies. Astronomers created the panoramic view as part of a five-year project called AEGIS (All-wavelength Extended Groth strip International Survey). Eight of the world's best space- and ground-based observatories, including Hubble, made meticulous surveys inside one patch of the night sky with an area about twice the size of the full Moon. The observatories peered up to 9 billion light years away to see about 150,000 galaxies evolving when the universe was much younger than today. They recorded the galaxies in all colours from X-rays to radio waves.