Based on the number of galaxies visible in the Hubble Deep Field (Figure 20.1 in your textbook),the estimated number of galaxies in our observable universe is
A)about 50,000.
B)about 100 million.
C)about 100 billion.
D)an infinite number.

Question

Quizplus · Accepted Answer

The Hubble Deep Field showed approximately 100 billion galaxies, leading to the estimate that there are approximately 100 billion galaxies in the observable universe.

Based on the Number of Galaxies Visible in the Hubble