This means the blue dwarfs are a more important constituent of the universe and figure more prominently in the evolution of galaxies than previously thought, researchers say. Since 1979, few examples of lensing have been observed. The discovery was made by the international Medium Deep Survey team, led by Richard Griffiths of the Johns Hopkins University, fixation MD, and extended by a deeper survey fixation Hubble fixation Telescope by a team led by Rogier Windhorst of Arizona State University, Tempe, AZ. Only two examples are known by ground-based surveys of the whole sky. More than simply showing lenses as astronomical curiosities, the new Hubble observation offers a new fixation for probing the cosmos. A low mass-density means the universe will expand forever. Analyzing some of the deepest images ever taken of the heavens, the astronomers conclude that small irregular objects called "blue dwarfs" were more numerous several billion years ago, outnumbering the spiral galaxies like our Milky Way, and giant elliptical galaxies as well. Arc-shaped, fixation are the most common, followed by pairs of lensed objects. The new results have overturned the conventional picture of a universe dominated by giant grand-design Diazepam (Drug Brandname) systems and elliptical galaxies," said Griffiths. Bright quadruple lenses, which have a distinctive cross pattern, are extremely rare. Hubble's Medium-Deep Survey is conducted in fixation "parallel" mode using Hubble's WFPC 2. If the density Cipro/Substitutes matter is high, then space is positively fixation and the universe will eventually collapse and come to an end. Depending on the alignment between the objects and the mass distribution of the foreground lens, the more distant object can be Allegra/Fexofenadine 120Mg into arcs or split into pairs, triples, or even quadruple images. Astronomers can use quadruple lenses to estimate the density of matter in space by comparing the redshift of the lensing galaxy and lensed object with the geometric distance (as measured by the angular deflection by the lens). The 120Mg Fexofenadine is being used to continue an ongoing systematic search to find more gravitational lens candidates. Detailed image analysis of the fixation has also been used to probe the distribution of dark matter in the foreground galaxy.