Hubble - Washingtonpost.com
washingtonpost.com
Home   |   Register               Web Search: by Google
channel navigation
 The Day in Photos
 Top Story
 News Video
 The Week in Review
 
 On Assignment
 On the Lightbox
 Best of the Post
 
 Photos From:
   OnPolitics
   Nation
   World
   Metro
   Business/Tech
   Sports
   Live Online
   Style
   Entertainment
   Education
   Travel
   Health
 
 FAQs
 Tools & Resources
 Contact Us
 Related Links
On Assignment

hubble
hubble 6/14 hubble

Cosmic Magnifying Glass

This giant magnifying glass-a massive cluster of galaxies called Abell 2218-resides in the constellation Draco, some 2 billion light-years from Earth. The cluster is so massive that its powerful gravitational field deflects light rays passing through it, much as an optical lens bends light to form an image. The phenomenon, called gravitational lensing, magnifies, brightens and distorts images from objects in the remote universe, and acts as a "zoom lens" for studying objects otherwise beyond reach. The "arcs" in the image are actually distorted galaxies five to 10 times farther away than the lensing cluster. Hubble has been watching the cluster since 1994 and took this latest shot in January.

Photo by NASA, Andrew Fruchter (STScI) and the ERO team (STScI, ST-ECF).




washingtonpost.com
Home | Register Web Search: by Google
channel navigation