Based on the Number of Galaxies Visible in the Hubble

question 49

Multiple Choice

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.

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Definitions:

Tilde

a character (~) used in various contexts including mathematics to indicate similarity or approximation, and in computing to represent home directories or negation.

Dot

A small round mark or spot, often used in writing or printing to signify a full stop or a part of a lowercase letter.

Wedge

A piece of material, typically metal or wood, with a sharp edge that tapers to a thin point, used for splitting, lifting, or securing.

Horseshoe

In symbolic logic, the horseshoe symbol represents the conditional or "if...then" statement, highlighting a logical relationship between two propositions.