Universe and the Solar System

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universe

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Totality of all space and time.

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jovian

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Outer planets

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19 Terms

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universe

Totality of all space and time.

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jovian

Outer planets

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mercury

Nearest planet to the sun

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Kant and Laplace

Nebular theory

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nebula

Is a cloud of gases or dust in space

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stars

Heavenly bodies with so much heat pressure inside

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constellation

Is an apparent arrangement of stars named after ancient beings.

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galaxy

Big assembly of stars, gas and dust held together by gravity.

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Earth

Our habitat

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asteroid

Minor planet

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Lithosphere

composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid.

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Asthenosphere

solid upper mantle material that is so hot that it behaves plastically and can flow.

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Transition Zone

rocks do not melt or disintegrate.

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Lower Mantle

is hotter and denser than the upper mantle and transition zone.

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Gutenberg discontinuity

the core-mantle boundary, or CMB, marks the end of the mantle and the beginning of Earth’s liquid outer core.

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CORE

mostly made of iron and nickel.

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Outer Core

is mostly composed of liquid iron and nickel.

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Bullen discontinuity

hottest part of the core where temperatures reach 6,000° Celsius—as hot as the surface of the sun.

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Inner Core

a hot, dense ball of (mostly) iron.