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Astronaut
An astronaut is a person who travels, works, and lives in space.
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Aurora
Auroras are colorful lights we see in the sky at night.
The light from an aurora moves like a big, flowing curtain.
We see most auroras near Earth's North Pole and South Pole.
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Corona
The corona is the Sun's atmosphere. We see the corona during a total solar eclipse.
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Coronal Mass Ejections
Coronal mass ejections are big eruptions coming off the Sun.
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Convection Zone
The convection zone is the part of the Sun where hot gases bubble like boiling water.
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Cycle
A cycle is something that happens over and over again-like day and night. A cycle
is a pattern that repeats.
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Magnetosphere
The magnetosphere is an invisible shield around Earth. The magnetosphere protects us from the solar wind.
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Photosphere
The photosphere is the part of the Sun that we can see with
a solar telescope. Remember, NEVER look directly at the Sun. You can hurt your eyes!
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Satellite
A satellite is an object that orbits Earth or another body in space.
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Solar Maximum
Solar maximum is when the Sun is very active.
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Solar Minimum
Solar minimum is when the Sun is not very active.
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Solar Wind
The solar wind always flows from the Sun.
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Star
A star makes energy. A star gives off light and heat.
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Sunspot
A sunspot is a spot on the Sun that is darker and cooler than the rest of the Sun.
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Venus
Venus is a planet. Venus is very hot. Sometimes you can see Venus after sunset or before sunrise.
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Venus Transit
June 8th, 2004 is a special day! Venus will be between us on Earth and the Sun. With special telescopes we will see Venus move in front of the Sun.
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