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Friday, August 20, 2010

'Dark Matter' Expansion of the Universe Seen

An international team of astronomers using gravitational lensing observations from the NASA/ESA Hubble Space Telescope has taken an important step forward in the quest to solve the riddle of dark energy, a phenomenon which mysteriously appears to power the Universe's accelerating expansion. Their results appear in the 20 August 2010 issue of the journal Science, reports popular media outlets BBC, Science Daily, Wired, and Sky&Tel.

1 comment:

Quantum_Flux said...

I think the main requirement for something to be considered "dark matter" is that it does not emit, absorb, or scatter radiation in a detectable matter except by gravitational means. Then, other more restrictive requirements that other people go by is that does not interact with ordinary matter besides through gravitation. There are a lot of hypothesises concerning what dark matter actually is and how it behaves.