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There are hundreds of millions of stars in our galaxy. 

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We can only really closely see one solar system, our own.

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The Sun is a massive dynamic place.

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Its impact is felt across the solar system.

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It affects our technology in space

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and it affects our astronauts.

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We’re still trying to understand the Sun.

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Three new missions are going to help us understand our star

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like never before.

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They will monitor the Sun's effects from up close,

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out to the edges of the solar system.

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We need to understand how our own home in the galaxy was created.

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Every time we've gone someplace new, we've been surprised.

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We expect there to be great discoveries of things

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we can't even envision today.

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Text: Watch live.