Billions of particles of invisible dark matter are probably flying - TopicsExpress



          

Billions of particles of invisible dark matter are probably flying through your body right now, passing through the spaces between your atoms without a trace. Dark matter is thought to constitute almost 27 percent of the universes total mass and energy, but its nature is a mystery. According to conventional thinking, these particles should be somewhat less abundant during the winter and should peak around June 1. But a new study suggests this calculation is way off; the real peak is at the beginning of March. Whatever dark matter is, it appears to clump into large clouds called haloes that engulf galaxies, including our own Milky Way. As the solar system makes its regular progression around the galaxy, it flies through this halo, causing dark matter to bombard the sun and planets with a steady wind, just as flies will hit the windshield of a fast-moving car. Earth, however, is also revolving around the sun. The new study suggests the pattern would be strongly affected by the gravitational effects of the sun, which have so far been dismissed as insubstantial.
Posted on: Thu, 06 Mar 2014 13:51:37 +0000

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