How do we know how far away stars are?

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Offline thedoc

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How do we know how far away stars are?
« on: 24/08/2013 18:04:15 »
The Gaia spacecraft, scheduled for launch by the European Space Agency this autumn, will make the most detailed map of our galaxy ever made.
Read a transcript of the interview by clicking here

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« Last Edit: 24/08/2013 18:04:15 by _system »