UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Their orbits do not cross.
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The sun is near the center of each orbit.
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They are ellipses that are nearly circular in shape.
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The distance between any two orbits changes based on how fast the planets rotate.
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Detailed explanation-1: -The planets all revolve around the sun in the same direction and in virtually the same plane. In addition, they all rotate in the same general direction, with the exceptions of Venus and Uranus. These differences are believed to stem from collisions that occurred late in the planets’ formation.
Detailed explanation-2: -A planet’s orbital speed changes, depending on how far it is from the Sun. The closer a planet is to the Sun, the stronger the Sun’s gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun’s gravitational pull, and the slower it moves in its orbit.
Detailed explanation-3: -Planets that orbit closer to the Sun than Earth have shorter years than Earth. Planets that orbit farther from the Sun than Earth have longer years than Earth.
Detailed explanation-4: -Today, we’ve mapped out the orbits of the planets to incredible precision, and what we find is that they go around the Sun-all of them-in the same two-dimensional plane, to within an accuracy of, at most, 7° difference.