UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Planetesimals containing metal compounds formed toward the nebula’s warmer center
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Gravitational forces attracted planetesimals made out of ice toward the center of the nebula.
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Lighter planets form toward the center of a solar system similar to how a planet’s core forms.
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The sun’s gravitational force attracts planets with less mass toward the solar system’s center.
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Detailed explanation-1: -Scientists believe that the solar system was formed when a cloud of gas and dust in space was disturbed, maybe by the explosion of a nearby star (called a supernova). This explosion made waves in space which squeezed the cloud of gas and dust.
Detailed explanation-2: -The order and arrangement of the planets and other bodies in our solar system is due to the way the solar system formed. Nearest to the Sun, only rocky material could withstand the heat when the solar system was young. For this reason, the first four planets – Mercury, Venus, Earth, and Mars – are terrestrial planets.
Detailed explanation-3: -The clue to why the inner and outer Solar System bodies have such different sizes and composition despite forming from a common nebula lies in realizing that all this planet formation was going on at the the same time as the proto-Sun was “turning on"; the inner Solar System was much hotter than the outer Solar System.
Detailed explanation-4: -Farther from the Sun, the temperatures were lower, allowing the condensation of lighter gaseous molecules such as methane, ammonia, carbon dioxide, and water [13]. This temperature differentiation resulted in the inner four planets of the solar system becoming rocky, and the outer four planets becoming gas giants.