View Full Version : Dark Matter Halos Were the First Objects

2005-Sep-06, 09:55 PM
SUMMARY: The nature of dark matter is one of the mysteries currently puzzling astronomers. A new study published in the journal Nature proposes that halos of dark matter the size of our Solar System (but with only the mass of the Earth) were the first objects to form after the big bang, and they served as the gravitational glue that attracted regular matter. It's possible that there are still more than a quadrillion (a million billion) of these halos just in our own galaxy, and they could pass through our Solar System occasionally. New observatories could be able to detect the gamma ray trails of these dark matter halos as they move through the Solar System, confirming one theory that they're composed of exotic particles called neutralinos.

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