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Solar System

the sun and the objects that orbit around it

Orbit

the path an object takes as it moves around another object in space

Planet

a large body of rock or gas that orbit the sun

Asteroid

chunk of rock or metal that orbits the sun

Comet

large ball of ice and dust that orbits the sun

Rotation

the spinning of an object on its axis

Axis

an imagnary line that goes through the North Pole and the South Pole

Revolution

movement of one object around another object

Light year

the distance that light travels in one year, light travels 186,000 miles per second. A light year is 6,000,000,000,000 miles

Core

center of the sun, the sun's hottest layer

Radiation zone

the sun's thickest layer - (it may take millions of years for the energy from the core to make it's way through this layer)

Photoshpere

the inner layer of the sun's atmosphere - most of the light that reaches the planets is released from this layer

Chromosphere

large cells of gas called supergranular cells, middle layer of the sun's atmosphere

Corona

the outermost layer of the sun's atmoshphere

Sunspots

cooler darker areas on the sun

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