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02 Oct 2017, 22:04
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
(hard)
Question Stats:
59% (02:09) correct
41%
(02:18)
wrong
based on 614
sessions
History
Date
Time
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Not Attempted Yet
Astronomer: Earlier estimates of the distances of certain stars from Earth would mean that these stars are about 1 billion years older than the universe itself, an impossible scenario. My estimates of the distances indicate that these stars are much farther away than previously thought. And the farther away the stars are, the greater their intrinsic brightness must be, given their appearance to us on Earth. So the new estimates of these stars’ distances from Earth help resolve the earlier conflict between the ages of these stars and the age of the universe.
Which one of the following, if true, most helps to explain why the astronomer’s estimates of the stars’ distances from Earth help resolve the earlier conflict between the ages of these stars and the age of the universe?
(A) The stars are the oldest objects yet discovered in the universe.
(B) The younger the universe is, the more bright stars it is likely to have.
(C) The brighter a star is, the younger it is.
(D) How bright celestial objects appear to be depends on how far away from the observer they are.
(E) New telescopes allow astronomers to see a greater number of distant stars.
Source: LSAT
Which one of the following, if true, most helps to explain why the astronomer’s estimates of the stars’ distances from Earth help resolve the earlier conflict between the ages of these stars and the age of the universe?
(A) The stars are the oldest objects yet discovered in the universe.
(B) The younger the universe is, the more bright stars it is likely to have.
(C) The brighter a star is, the younger it is.
(D) How bright celestial objects appear to be depends on how far away from the observer they are.
(E) New telescopes allow astronomers to see a greater number of distant stars.
Source: LSAT
21 Jan 2018, 10:51
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Took me a while to understand after picking up a wrong choice.
Earlier estimates: Stars are about 1 billion years older than the universe.
Astronomer's observations: Start are in fact farther and the brightness increases with distance.
Choice C fills up the gap and explains that stars are not actually 1 billion years older than the universe by supporting that the brighter a star appears, the younger it could be.
Just restarted my GMAT life. KUDOs please
Earlier estimates: Stars are about 1 billion years older than the universe.
Astronomer's observations: Start are in fact farther and the brightness increases with distance.
Choice C fills up the gap and explains that stars are not actually 1 billion years older than the universe by supporting that the brighter a star appears, the younger it could be.
Just restarted my GMAT life. KUDOs please
General Discussion
03 Oct 2017, 00:11
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Masshole
There is a missing gap in the argument: How could the further distance from the stars to the Earth have influence on the age of it? Choice C fills this gap well.
