Author Question: Both protons and neutrons (and their anti-particles) froze out: A) after 10-43 seconds, at the ... (Read 54 times)

ENagel · **on:** Jul 27, 2018

Both protons and neutrons (and their anti-particles) froze out:

A) after 10-43 seconds, at the Planck Era.
B) at 1032 K, at the end of the Inflationary Era.
C) at 1013 K, about .0001 seconds after the Big Bang.
D) after about a minute of expansion.
E) about 50,000 years after the Big Bang.

Question 2

Motions of objects near our Galaxy's core suggest the central black hole is about 3.7 billion solar masses.

Indicate whether the statement is true or false