Answer:
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Explanation:
3. an astronomical unit is based on the distance from the earth to the sun.
The true statement among the given statement is an astronomical unit is based on the distance from the earth to the sun. therefore the correct answer is option C.
It is a system that collection of all the planets and spatial bodies revolving around the sun because of the gravitational pull of the sun.
Our Solar System is based on a heliocentric model in which the Sun is assumed to reside at the central point of the planetary system.
In other words, the Sun is at the center while the Earth and other planetary bodies revolve around it.
The distance of the earth from the sun varies as the earth revolves in an elliptical cycle around the sun so the first statement is wrong.
There are millions of galaxies in our universe so The Milky way is not the only galaxy in the universe.
An astronomical unit is based on the distance from the earth to the sun
1 AU = 1.496 x 10¹¹ m.
Thus , The true statement among the given statement is an astronomical unit is based on the distance from the earth to the sun. therefore the correct answer is option C.
Learn more about Solar System
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