What is the Great Wall?
A) It is a ridge on the Moon near the crater Birt.
B) It is the distance beyond which astronomers cannot view any more galaxies or even quasars.
C) It is a large sheet of galaxies measuring 70 Mpc by 200 Mpc.
D) It is the time before the universe started expanding, about which we can never know anything.
E) It is an enormous intergalactic cloud of dust and gas that hides more distant galaxies.
Correct Answer:
Verified
Q68: Giant elliptical galaxies may be the result
Q69: A red supergiant is observed in a
Q70: Supermassive elliptical galaxies have been seen to
Q71: All of the following are clusters of
Q72: A galaxy is at a distance of
Q74: The Sloan Digital Sky Survey uses:
A)a single
Q75: When two galaxies move very closely to
Q76: Careful observations of nearby normal and active
Q77: Infall of _ may explain the higher
Q78: The lensing of a distant quasar is
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents