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Welcome to Idaho Skies for February 1st and 2nd. We’re your hosts, Paul...
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...and Rachel.
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The solar system’s largest asteroid is Ceres and it’s easy to find on the night of the 2nd.
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To see Ceres, first point your binoculars at the moon.
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Then look ½ degree straight down the moon’s terminator, or boundary between day and night.
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For a sense of scale, half a degree is the apparent diameter of the moon.
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Stargazers will see two stars directly below the moon.
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And Ceres is the star to the right
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And the one that’s slightly closer to the moon.
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Ceres was the first asteroid that astronomers discovered.
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In fact, they discovered on January 1st, 1801.
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This dwarf planet is 590 miles across.
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Meaning it would span the distance across Idaho and Wyoming.
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Did you know there’s a spacecraft in orbit around Ceres?
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Its name is Dawn and this is the second asteroid it has visited.
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Dawn discovered the presence of bright spots on the surface of Ceres.
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The spots turned out to be salts deposited on the surface of Ceres.
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Those salt patches were the result of a briny solution welling up to the surface.
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All that salt means that Ceres is rich in water.
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And that will make it a great place to put a refueling station for spacecraft in the future.
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That’s Idaho Skies for the 1st and 2nd of February.
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Be sure to follow us on Twitter @IdahoSkies for this week’s event reminders and sky maps.
For Idaho Skies this is Rachel...
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...and Paul.
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Dark skies and bright stars.
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