GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Earth
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Jupiter
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Mars
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None of the above
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Detailed explanation-1: -Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons. In the outer solar system, the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune have dozens of moons.
Detailed explanation-2: -Mars has two moons, Phobos and Deimos. Both are believed to be captured asteroids. Phobos is the larger of Mars’ two moons. It orbits Mars three times a day, and is so close to the planet’s surface that in some locations on Mars it cannot always be seen.
Detailed explanation-3: -Among astronomers who use the geophysical definition of a planet, two or three planetary-mass satellites – Earth’s Moon, Io, and sometimes Europa – may also be considered terrestrial planets; and so may be the rocky protoplanet-asteroids Pallas and Vesta.