Author Question: From a theoretical standpoint, what is a pulsar? A) a star that alternately expands and contracts ... (Read 34 times)

Capo · **on:** Jul 27, 2018

From a theoretical standpoint, what is a pulsar?

A) a star that alternately expands and contracts in size
B) a rapidly rotating neutron star
C) a neutron star or black hole that happens to be in a binary system
D) a binary system that happens to be aligned so that one star periodically eclipses the other
E) a star that is burning iron in its core

Question 2

What is the average temperature of the surface of the Sun?

A) 1 million K
B) 100,000 K
C) 10,000 K
D) 6,000 K
E) 1,000 K