by emc » Thu Feb 11, 2010 11:30 pm
This is what I read… the subject is cosmic expansion
... If the universe indeed has been continuously expanding for billions of years, the most distantly observed objects would be moving away at extreme velocities (close to the speed of light). Einstein’s relativity theory predicts that these distant “clocks” will thus run about 10-60% more slowly (due to relativistic effects) than equivalent clocks in the vicinity of the Milky Way. Observations show that in the Milky Way, an exploding star (supernova) takes about seven months to transition from maximum to minimum brightness, and a typical gamma-ray burst takes an average of about 15 seconds to undergo this same transition. However, at great distances these transitions take longer by the exact amounts consistent with their distance in an expanding universe…
This is what I read… the subject is cosmic expansion
... If the universe indeed has been continuously expanding for billions of years, the most distantly observed objects would be moving away at extreme velocities (close to the speed of light). Einstein’s relativity theory predicts that these distant “clocks” will thus run about 10-60% more slowly (due to relativistic effects) than equivalent clocks in the vicinity of the Milky Way. Observations show that in the Milky Way, an exploding star (supernova) takes about seven months to transition from maximum to minimum brightness, and a typical gamma-ray burst takes an average of about 15 seconds to undergo this same transition. [b]However, at great distances these transitions take longer by the exact amounts consistent with their distance in an expanding universe…[/b]