A. 8 times faster
B. 4 times faster
C. 2 times faster
D. 1.6 times faster
E. No general statement can be made
2006-07-26 12:39:52 · 6 answers · asked by dm5k674 1 in Science & Mathematics ➔ Astronomy & Space
C - twice as fast. That is why we arrived at a Hubble Constant, the value at which things are receding. The constant is somewhere between 50 and 100 kps/megaparsec, so for a given distance there is a constant rate of expansion, and for twice that distance, there is twice the rate of expansion.
2006-07-26 12:50:40 · answer #1 · answered by aichip_mark2 3 · 0⤊ 0⤋
Ah, the inconstant Hubble Constant, as I like to call it. They keep tweaking the number...they still don't have it nailed down. Personally, I think this whole expanding universe thing is going to go down as one of the greatest scientific mistakes of our time...though it may take a while. Afterall, Ptolemy's completely incorrect model of the universe was unrefuted gospel for 1500 years.
2006-07-26 20:19:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
If 'Y' is 10 megaparsecs away its recessional velocity would be 700 km/second
'X' is twice as far away (20 megaparsecs) and has a recessional velocity of 1400 km/second
2006-07-26 20:55:27 · answer #3 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
c
i have no idea but it seems the wisest
2006-07-26 19:49:33 · answer #4 · answered by shorty 3 · 0⤊ 0⤋
v = H0D
2006-07-26 19:45:54 · answer #5 · answered by ? 3 · 0⤊ 0⤋
E.
2006-07-26 19:43:23 · answer #6 · answered by Marvinator 7 · 0⤊ 0⤋