After the atomic epoch, and before the current stellar epoch, came:
A) the black hole epoch, when black holes were common.
B) the end of the lepton epoch, when neutrinos were formed and escaped from matter.
C) the liberation of the dark energy.
D) the galactic epoch, when the main events were galaxy construction.
E) about three billion years after the Big Bang, with Population I stars forming.
Correct Answer:
Verified
Q53: What key event took place during the
Q54: The quark epoch is when _ was/were
Q55: Which of these orderings of the epochs
Q56: How do astronomers define the "superforce"?
A)a force
Q57: At what point do the weak
Q59: Which of these substances must be primordial?
A)helium
B)lithium
C)deuterium
D)beryllium
E)tritium
Q60: At the end of the first fifteen
Q61: The critical temperature for nucleosynthesis to begin
Q62: Most of the deuterium that formed right
Q63: The "flatness" problem arises because the curvature
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