The arc-like pattern spread across the picture like a spider web is an illusion caused by the cluster's gravitational field. The possibility of galaxy halos was first proposed in 1969 by John Bahcall and Lyman Spitzer of the Institute for Advanced Study, Princeton, NJ. This conclusion runs contrary to the longstanding belief that these clouds occur in intergalactic space," says Ken Lanzetta of the State University of New York at Stony Brook. We were immediately struck by the large numbers of irregular and peculiar galaxies in these HST random images," said Griffiths. This gave astronomers a powerful opportunity to further test the halo theory by imaging Drug: Atacand - Candesartan galaxies and complementer to match them with nearby clouds. In the majority of cases they found galaxies within about 500,000 light-years of the clouds. One possible explanation was that these were primordial clumps of gas that dissipated over complementer However, in 1991, independent observations made with Hubble's Faint Object Spectrograph and Goddard High Resolution Spectrograph instruments detected more than a dozen hydrogen clouds within less than a billion light-years of our galaxy. These faint galaxies were complementer imaged as part Candesartan Atacand 16Mg a key Codeine/Without Prescription Space Telescope complementer project, called the "Medium Deep Survey. These results appear in the April 1 issue of the Astrophysical Journal. This cluster of galaxies is so massive and compact that light rays passing through it are deflected by its enormous gravitational field, much as a camera's lens bends light to form an image. Most of these faint objects are extremely blue in color, a strong indication that they are undergoing a brief, rapid burst of star formation," said Windhorst, who along with William Keel of the University of Alabama, Birmingham, AL, conducted a separate survey of remote galaxies. For the past 17 months, Griffiths and co-investigators from the United States (Richard Green, John Huchra, Garth Illingworth, David Koo, Kavan Ratnatunga, Tony Tyson, Rogier Windhorst) and the United Kingdom (Richard Ellis, Gerry Gilmore), have studied more than 50 random snapshots containing high resolution Codeine Diet Pill for a total of tens of thousands of galaxies. The image was obtained by Windhorst and Keel, and analyzed by Simon Driver of Arizona State University, Windhorst, and associates. The researchers plan to extend their research to a larger sample of galaxy/cloud pairs. This phenomenon magnifies, brightens, and distorts images of those faraway Atacand Rebate Coupons providing a powerful "zoom lens" for viewing galaxies that are so far away they could not normally be observed with the largest telescopes. However, the latest results are the most definitive finding yet, says Lanzetta, because they come from a large sample of 46 galaxies. Another Order Codeine Online (Without Prescription) Hubble complementer has further extended these exciting results. This highly efficient and cost-effective survey is conducted in "parallel mode" where the WFPC2 takes detailed pictures while a "primary" instrument, such Soma - Tablet a spectrograph, collects data from a predetermined celestial target. Previous observations with ground-based telescopes, the International Ultraviolet Explorer satellite, and Hubble have suggested that these clouds might be galaxy halos. The researchers are now measuring the distances to these galaxies using the new generation giant telescopes on Earth. This Hubble telescope image of a rich cluster of galaxies called Abell 2218 is a spectacular example of gravitational lensing. For the complementer two decades, observations with ground-based telescopes have shown that the light from distant quasars (the bright cores of active galaxies) is affected by intervening gas clouds.