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To: Normal4me
They don't know what Dark matter is yet it can weigh as much as 100 Trillion of our suns...? How'd they pull That one out of their @sses?

Because gravity is proportional to mass, and gravity bends light. We can accurately measure the bending of light from distant sources, so we can accurately measure the intervening mass, even if we don't know just what it is. Pretty clever, huh?

20 posted on 06/30/2003 7:32:26 PM PDT by Physicist
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To: VadeRetro; jennyp; Junior; longshadow; *crevo_list; RadioAstronomer; Scully; Piltdown_Woman; ...
PING. [This ping list is for the evolution side of evolution threads, and sometimes for other science topics. FReepmail me to be added or dropped.]
22 posted on 06/30/2003 7:35:43 PM PDT by PatrickHenry (Everything good that I have done, I have done at the command of my voices.)
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To: Physicist
Are axions a possibility to cover much of it?
28 posted on 06/30/2003 7:42:45 PM PDT by spunkets
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