Invisible College II - The Blind Spot <$BlogRSDUrl$>
Fill out your e-mail address
to receive our newsletter!
Powered by

Wednesday, February 23, 2005

Astronomers find star-less galaxy

Astronomers say they have discovered an object that appears to be an invisible galaxy made almost entirely of dark matter.

The team, led by Cardiff University, claimed it is the first to be detected.

A dark galaxy is an area in the Universe containing a large amount of mass that rotates like a galaxy, but contains no stars.

It was found 50 million light years away using radio telescopes in Cheshire and Puerto Rico.

The unknown material that is thought to hold these dark galaxies together is known as 'dark matter', but scientists still know very little about what that is.

The five-year research has involved studying the distribution of hydrogen atoms throughout the Universe, estimated by looking at the rotation of galaxies and the speed at which their components moved.

Hydrogen gas releases radiation that can be detected at radio wavelengths.

In the Virgo cluster of galaxies, they found a mass of hydrogen atoms a hundred million times the mass of the Sun. (cont.)

posted by DW  # 1:38 PM


January 2005   February 2005   March 2005   April 2005   May 2005   June 2005   July 2005   August 2005   September 2005   October 2005   November 2005   December 2005   January 2006   February 2006   March 2006   April 2006   May 2006   June 2006   July 2006   September 2006   October 2006   November 2006   December 2006   May 2007   August 2007   October 2007   December 2008   August 2011  

Free Web Page Hit Counters

This page is powered by Blogger. Isn't yours?