| Where
are we within the plane? |
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| • | Great Circle suggests a |
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| plane of material with us |
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| in plane (like ecliptic) |
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| • | Similar brightness in all |
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| directions in plane. |
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| • | Does that really mean we |
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| are located in the center? |
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| Side
View |
| Top
View |
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| • | That is an illusion: We
can |
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| only see a limited distance |
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| in the disk because of dust |
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