Author Question: Based on the number of galaxies visible in the Hubble Deep Field (Figure 16.1 in your textbook), the ... (Read 65 times)

jrubin · **on:** Jul 27, 2018

Based on the number of galaxies visible in the Hubble Deep Field (Figure 16.1 in your textbook), the estimated number of galaxies in our observable universe is about ________.

A) 50,000 B) 100 million C) 100 billion D) Infinity

Question 2

The density of the universe is large enough that gravity alone will eventually halt its expansion.

Indicate whether the statement is true or false