Astronomers Sometimes Announce That They Have Discovered a New Solar

question 79

Multiple Choice

Astronomers sometimes announce that they have discovered a new solar system beyond our own,or a new galaxy beyond our own.Which choice correctly describes the terms "solar system" and "galaxy"?

• A) A solar system is a large assemblage of stars similar to the Sun,whereas a galaxy is much larger and consists of all different types of stars.
• B) A solar system consists of an immense number of stars (i.e. ,suns),and a galaxy is a cluster of many such systems.
• C) A galaxy consists of planets and other objects orbiting around a single star,whereas a solar system is a system consisting of an immense number of stars (i.e. ,suns).
• D) A solar system consists of planets and other objects orbiting around a star,whereas a galaxy is a system consisting of an immense number of stars.

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