2007/05/16

Dark Matter

Strongest Evidence Yet


Long disputed, the evidence for Dark Matter has been gatherin steadily.

"This is the strongest evidence yet for the existence of dark matter," astronomer Myungkook James Jee of Johns Hopkins University in Baltimore told reporters.


Astronomers believe dark matter - as opposed to ordinary matter making up the stars, planets and the like - comprises about 85 per cent of the universe's material, but evidence of it has been difficult to come by.


Dark matter cannot be directly seen. It does not shine or reflect light, but astronomers infer its existence in galaxy clusters by observing how its gravity
bends the light given off by even more faraway galaxies. They do not know what
it is made of, but think it could be a kind of particle.


Astronomer Richard Massey of the California Institute of Technology, not involved in the research, said the findings are facing scepticism within the astronomical community.


"It's really exciting if it's right. But to be sort of convinced of the ring, astronomers would really want to see some independent observations verifying it," Massey said.


Here's the article.

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