GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Starts contain several solar systems
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Galaxies contain many stars
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Solar systems contain many galaxies
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Stars contain a few galaxies
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Detailed explanation-1: -Which of the following is the best description of the Milky Way Galaxy? Explanation: The answer is “a spiral shaped cloud of billions of stars.” Star-A ball of hydrogen gas held together by gravity.
Detailed explanation-2: -Astronomers can use what are called surface brightness fluctuations (SBF, for short), along with the color of a galaxy, to calculate how far away it is from earth. Most galaxies measured in this way are millions of light years away.
Detailed explanation-3: -Multiplying that by the Milky Way’s estimated 100 billion stars results in a large number indeed: 1, 000, 000, 000, 000, 000, 000, 000, 000 stars, or a “1” with 24 zeros after it (1 septillion in the American numbering system; 1 quadrillion in the European system).