Thursday, July 08, 2010

Particles Larger Than Galaxies Fill the Universe?

Particles Larger Than Galaxies Fill the Universe?
Charles Q. Choi
for National Geographic News
June 2, 2009

"The oldest of the subatomic particles called neutrinos might each encompass a space larger than thousands of galaxies, new simulations suggest."
[. . .]
"But over the roughly 13.7-billion-year lifetime of the cosmos, "relic" neutrinos have been stretched out by the expansion of the universe, enlarging the range in which each neutrino can exist."

It's a year old article but I just happened across it the other day. This is fascinating stuff, really. The idea that what might start out as a subatomic particle could, theoretically, become one of the largest single things in the universe.

It's no wonder I love this stuff.
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