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Post Info TOPIC: Parallax and Parsecs


L

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Parallax and Parsecs
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very now and then, I refer to astronomical distances such as Astronomical Units or Parsecs, but I dont think that Ive yet actually had a posting about the meaning of those terms. So, I thought that Id write about these distance measurements today.

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1 Astronomical Unit = 149 597 870 691 ± 30 metres (~ 150 million kilometres)

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