HST and 'dark matter' |
HST and 'dark matter' |
Guest_PhilCo126_* |
May 11 2007, 05:13 PM
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Guests |
ASA Updates Plans for Hubble 'Ring Of Dark Matter' Briefing
GREENBELT, Md. - NASA will hold a media teleconference at 1 p.m. EDT on May 15 to discuss the strongest evidence to date that dark matter exists. This evidence was found in a ghostly ring of dark matter in the cluster CL0024+17, discovered using NASA's Hubble Space Telescope. The ring is the first detection of dark matter with a unique structure different from the distribution of both the galaxies and the hot gas in the cluster. The discovery will be featured in the June 20 issue of the Astrophysical Journal. |
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Apr 4 2010, 03:38 PM
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#2
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Member Group: Members Posts: 934 Joined: 4-September 06 From: Boston Member No.: 1102 |
Mongo
"As the example stated, if the Earth were rotating in an otherwise empty universe, would it still be considered to be rotating?" Absolutely. Just set up a Foucault's pendulum, or play pool on a frictionless table and see if your ball goes on a straight or on a curved path (we will assume somone on earth for this experiment is not on the equator). If I recall correctly, this was a problem in one of my first year of physics class. -------------------- |
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