Dark Matter
Astronomers know it exists because the gravity of the invisible stuff bends the paths of visible stars and galaxies. Some scientists believe it constitutes as much as 90% of all matter in the universe. The identity of dark matter is the outstanding problem of astronomy.
1 Comments:
Did you read the interesting articles on the BBC web site about Dark Matter? Fascinating isn't it? http://news.bbc.co.uk/1/hi/sci/tech/6235751.stm?ls
Angie xxx
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