View Full Version : Discussion: More Evidence for Dark Energy

2003-Sep-17, 10:29 PM
SUMMARY: Astronomers have studied the light from 11 new supernovae to help validate the evidence that some kind of "dark energy" is accelerating the Universe apart. The supernovae are a special type called Ia, which are known to be roughly the same brightness. By measuring their relative brightness, they can calculate how distant the Type Ia supernovae are. This latest data was gathered by an international team of astronomers using ground telescopes to provide followup targets for the Hubble Space Telescope. A new satellite is planned, called the SuperNova/Acceleration Probe, which will be able to discover thousands of supernova and track their explosions precisely.

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2003-Sep-17, 10:42 PM
I'd heard that dark matter is composed of anti-electrons, protons, and neutrons.
At contact, opposite particles and their opposite destroy each other. If this is so, then why don't galaxies destroy themselves since we've found evidence of "halos" of dark matter around them?