solar systems

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10 Terms

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Nebular Hypothesis
A theory that explains the formation of the solar system, stating that a rotating cloud of interstellar gas collapses and flattens to form a disk.
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Meteorites
Leftover material from the young solar system that contains clues about solar system formation.
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Extrasolar Planet
A body with a mass less than 13 Jupiter masses that orbits a star other than the sun.
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Radial Velocity Method
A technique for finding extrasolar planets by observing the Doppler shift in a star's spectrum as a planet orbits it.
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Transiting Method
A technique for detecting extrasolar planets by measuring the decrease in brightness of a star when a planet passes in front of it.
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Accretion Disk
A rotating disk of gas and dust formed from material collapsing under gravity, leading to planet formation.
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Types of Exoplanets
Categories of planets outside our solar system, including terrestrial, Neptune-like, super-Earths, and gas giants.
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Comparative Planetology
The study of comparing common properties across different planets.
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Giant Impact Hypothesis
Current leading theory explaining the formation of the moon, suggesting it was created from debris after a Mars-sized body impacted Earth.
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Radiometric Dating
A method used to determine the age of rocks using the decay of radioactive isotopes.