UNIVERSE
SPACE EXPLORATION
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The sun
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Gravity
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Earth’s magnetic field
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None of the above
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Detailed explanation-1: -The sun’s gravity keeps Earth in orbit around it, keeping us at a comfortable distance to enjoy the sun’s light and warmth. It holds down our atmosphere and the air we need to breathe. Gravity is what holds our world together.
Detailed explanation-2: -Gravity is the force of attraction between all objects in the Universe. Objects with more mass have greater gravitational pull than objects with less mass. Gravity keeps Earth and the planets orbiting around the Sun instead of floating off into space.
Detailed explanation-3: -As the planets began to settle into orbits the pull of gravity from their own center of mass pulled them in on themselves, tugging at each planet’s mass equally towards its center. This strong internal gravitational pull gives planets their round, spherical shape.
Detailed explanation-4: -Gravitational force is the force responsible for holding planets in their orbits around the Sun. The Sun contains 99.86% mass of the entire solar system and that is why it is able to keep the planets in their orbits.
Detailed explanation-5: -The Sun’s gravitational force is like the tetherball rope, in that it constantly pulls Earth toward it. Earth, however, like the tetherball, is traveling forward at a high rate of speed, which balances the gravitational effect. This means that the planet neither flies out into space nor falls into the Sun.