2007-09-20 06:04:47 · 8 answers · asked by drifter129 2 in Science & Mathematics ➔ Astronomy & Space
I suspect strongly that you've been watching Red Dwarf. Poor Rimmer's never going to pass that astronavigation exam in an infinity of lifetimes, but we'll all have a good laugh watching him try.
Real answer:
Red shift signifies that an object is receding from us. In the case of quasars they are moving away from us at an appreciable fraction of the speed of light.
2007-09-20 06:14:21 · answer #1 · answered by Grimread 4 · 2⤊ 0⤋
1
2017-01-20 10:08:28 · answer #2 · answered by zook 4 · 0⤊ 0⤋
The red spectrum does tell us that the quasars are moving away from us, as explained partly by the Doppler effect in sound waves, only that this time, it's applied to light waves. Also, it is possible that quasars were one of the first things to be ejected by the big bang, or at least were the ones on the outer explosion of it since farther objects from point of the bang seem to travel faster than the objects near the bang point.
2007-09-20 06:14:01 · answer #3 · answered by nj 2 · 0⤊ 0⤋
When an object is 'red shifted', meaning, all stars have a similar spectrum, but some are shifted toward the red, and some are shifted more than others.
The more 'red shifted' something is, the farther away it is.
Assuming everything started it's motion at the Big Bang, then, logically, the farther something is away, the faster it must be moving. The speed of an object moving away from us is shifted farther to the red the faster it goes, and likewise, this is an indication of it being farther away.
2007-09-20 07:03:41 · answer #4 · answered by quantumclaustrophobe 7 · 0⤊ 0⤋
Red Shift indicates how fast an object is moving (away).
It is generally accepted that, due to the expansion of the Universe, the faster the object, the further away it is.
Since all(?) Quasars have very high Red Shifts, they must be a very long way away and have formed very early in the history of the Universe .. also, becasue they are so far away they must have really high energy emission levels ...
2007-09-20 06:16:30 · answer #5 · answered by Steve B 7 · 0⤊ 0⤋
Everybody's right... pretty much.
Red- shift in a subject's spectrum indicates how fast it is moving AWAY from us.
Distance calculations can be made from this data.
If the subject's spectrum were to be shifted toward the blue end of the spectrum, the subject would be known to be moving toward us.
This is known as the Doppler Shift.
2007-09-20 06:30:04 · answer #6 · answered by Bobby 6 · 0⤊ 0⤋
That they're moving away from us?
2007-09-20 06:09:50 · answer #7 · answered by Anonymous · 0⤊ 0⤋
hmmmmm
2007-09-20 06:12:14 · answer #8 · answered by Anonymous · 0⤊ 0⤋