recent observations show that the rate of expansion of the universe is _____?
a) slowing down
b) stabilizing
c) constantly changing
d) speeding up
2007-05-21 14:25:14 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
from what i have read and what i have heard, the rate is ever quickening
2007-05-21 14:29:03 · answer #1 · answered by Anonymous · 0⤊ 0⤋
the cost of sunshine is an absolute cut back in specific Relativity. usually Relativity, 2 gadgets can no longer bypass one yet another swifter than easy, yet issues very distant in the direction of acceleration can substitute their distance many circumstances swifter than easy. that's with the help of the fact acceleration shrinks area in proportion to the gap. the cost of growth is the Hubble consistent H?, that's predicted (in SI gadgets) at extra or less 2.4 x 10^-18/s. the gap to far-off galaxies will boost on the cost of H? circumstances the gap; v = rH?. case in point, if r = 10^25 m, v = 2.4 x 10^7 m/s. If r > c/H?, then the gap will boost swifter than easy. that's the Hubble cut back, approximately 13 billion easy years, that's the dimensions of the seen universe. easy can by no ability attain us from something previous the Hubble cut back. although, it is not seen to be an relatively speed. In comoving coordinates, speed is relative to the community comoving area, no longer relative to the observer. the cost of adjusting distance as a results of growth of area is seen to be an "obvious speed". approximately 15 years in the past, astronomers chanced on information that the growth is accelerating. In different words, the cost of H? could be increasing. This ends up in an obvious paradox. the swifter area expands, the smaller the seen universe will become.
2016-11-25 23:36:03 · answer #2 · answered by cynthy 4 · 0⤊ 0⤋
D. is correct and foolsthru is wrong.
Einstein's "mistake" was assuming that the universe was static (as everyone else at the time did). It wasn't until Edwin Hubble that we realized that the universe was expanding. Then Einstein's "fudge factor" turned out to have a basis in reality, but not as he expected.
2007-05-21 16:44:06 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Answer D is correct...Speeding Up.
2007-05-21 15:46:48 · answer #4 · answered by zahbudar 6 · 0⤊ 0⤋
d) speeding up
This is precisely what forced the conclusion that there must be some kind of dark energy.
2007-05-21 14:29:08 · answer #5 · answered by Vincent G 7 · 1⤊ 0⤋
speeding up!
It was Einsteins 'biggest mistake' saying that it was remaining constant.
2007-05-21 15:12:19 · answer #6 · answered by foolsthru 1 · 0⤊ 1⤋