Explore the formation of the Solar System through the nebular hypothesis, which posits that it originated from a molecular cloud 4.6 billion years ago. The Sun formed at the center, with planets and other celestial bodies emerging from a protoplanetary disk. The text delves into the Solar System's evolution, including planetary migration and the future red giant phase of the Sun. It also touches on historical perspectives and the role of a supernova in the birth of the Sun.
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1
The ______ took shape at the heart of a collapsing mass, with a protoplanetary disk forming around it that eventually led to the creation of planets and other bodies.
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2
The nebular hypothesis, initially put forth in the ______ century by thinkers like Swedenborg, Kant, and Laplace, has been refined by evidence from astronomy and other sciences.
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3
Formation of moons in the Solar System
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4
Role of collisions in Solar System
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5
Characteristics of trans-Neptunian objects
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6
After expanding, the Sun will lose its outer layers and transition into a ______, a compact stellar remnant.
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7
The Sun's planets may be ejected or destroyed due to ______ from nearby stars and the ______ over the next tens of billions of years.
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8
Eventually, the Sun is predicted to end up as a ______, possibly without the ______ it once had.
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9
Origins of cosmos speculation era
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10
Heliocentrism acceptance century
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11
Empirical evidence for nebular hypothesis
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12
The ______ of the Solar System started with the gravitational fall of a part of a giant molecular cloud.
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13
The presolar nebula mainly consisted of ______ and ______, with small amounts of heavier elements.
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14
The oldest meteorites act as a historical record of the early Solar System and suggest that a ______ might have influenced the molecular cloud's collapse.
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15
Sun's transition to main sequence stage
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16
Protoplanetary disk significance
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17
Sun's evolution from T Tauri to main-sequence
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