Astronomers view light coming from distant galaxies moving away from the Earth at speeds greater than 10% the speed of light. How fast does this light meet the telescopes of the astronomers?
2007-05-30 20:20:57 · 4 answers · asked by Anniepannie06 2 in Science & Mathematics ➔ Physics
Good question, gravity does effect the light waves. a bend here, a push there=fluctuation.
If light source X is moving away from Observation point Y and Y is constant fixed point, (with is in our conception impossible) The light from Source X would reach the observer at Fixed Point Y , but if the objects are moviong away at faster than speed of light, no light would be visible, it self negates by it's own velocity.
2007-05-30 20:34:39 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The speed doesn't change but the Doppler effect shifts the wave length toward the red.
2007-05-31 11:08:08 · answer #2 · answered by Billy Butthead 7 · 0⤊ 0⤋
The speed is not affected at all; it is always 299,796 km/sec, however measured. But the wavelength IS affected: the Doppler effect creates a red shift (longer wavelengths).
2007-05-31 03:24:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋
light travels at approx. 186,000 mi per /sec regardless of the movment of the object it strikes that is one foot per nano second
this article might be helpful
http://en.wikipedia.org/wiki/Speed_of_light
2007-05-31 03:29:57 · answer #4 · answered by dogpatch USA 7 · 0⤊ 0⤋