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

[ENagel]

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

[EAN94]

Answer to Question 1

C

Answer to Question 2

FALSE

[ENagel]

Gracias!

[recede]

Excellent