Blog

Main » 2014 » November » 15 » Event Horizon and Grand Unification
8:52 PM
Event Horizon and Grand Unification

Thanks to the Hubble Space Telescope, this area is captured in the deepest images of the universe ever made by humankind at optical and near-infrared wavelengths. The relative brightness of the galaxy at different wavelengths is influenced by the expanding universe, and allows astronomers to estimate its distance. Galaxies grew from small clumps of stars to ever-bigger assemblages. Hubble's Advanced Camera for Surveys (ACS) does not see the galaxy at all, despite the fact that the Ultra Deep Field is the deepest image ever alien in optical light. Another galaxy's central disk of gas and dust may be slightly warped. The galaxy was detected using Hubble's infrared camera, the Near Infrared Camera and Multi-Object Spectrometer (NICMOS), and also with an infrared camera on the Very Large Telescope (VLT) at the European Southern Observatory, but at those wavelengths it is very faint and red. Lawrence Eyles from the University of Exeter and collaborators, and Haojing Yan of the Spitzer Science Center, working with other members of the GOODS team, have published joint Spitzer and Hubble analyses that identify other galaxies nearly as massive as the Milky Way, seen when the universe was less than one billion years old. These galaxies are not small because they are far away, but because they are truly tiny. However, the discovery of this object suggests that at least a few galaxies formed quickly and in their entirety, long ago, as some older theories of "monolithic" galaxy formation have suggested. The gravitational forces of the massive galaxy deflects the light from a galaxy lined up behind it and amplifies it, like a glass lens bending and focusing starlight in a telescope. This is a watershed in the evolving universe. Still another galaxy's Hydrocodone Online (C.O.D.) may be distorted due to an encounter with another galaxy. Spitzer's IRAC is sensitive to the light from older, redder stars which should make up most of the mass in a galaxy, and the brightness of the galaxy suggests that it is quite massive indeed. The light reaching us today began its journey when the universe was only about 800 million years old. Planned for launch in 2013, the JWST will have the light collecting power not only to see more distant objects, but to measure their spectral fingerprints as well, yielding even more reliable distances and chemical composition information. The galaxy is believed to be about as far away as the most distant galaxies and quasars now known. In many cases, astronomers would not be able to see the distant galaxies at all because they are too far away. However, the big surprise was how much brighter the galaxy is in images from Spitzer's Infrared Array Camera (IRAC), which easily detects it at wavelengths as much as five times longer than those seen by the Hubble. This is a problem that has perplexed astronomers over the past decade, and NASA's Hubble Space Telescope has at last glimpsed what Hydrocodone - Generic Online could be the "end of the opening act" of galaxy formation. The galaxy was pinpointed among approximately 10,000 others in a small patch of sky called the Hubble Ultra Deep Field.

Views: 413 | Added by: pinegarden | Tags: Science | Rating: 0.0/0
Total comments: 0
Name *:
Email *:
Code *:
Login form
Search
Calendar
«  November 2014  »
SuMoTuWeThFrSa
      1
2345678
9101112131415
16171819202122
23242526272829
30
Entries archive
Site friends
  • Create a free website
  • Online Desktop
  • Free Online Games
  • Video Tutorials
  • All HTML Tags
  • Browser Kits
  • Statistics

    Total online: 1
    Guests: 1
    Users: 0