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mojowind t1_j4kmzg3 wrote

Reply to comment by Ordoshsen in How do we know that we are in a certain place inside our galaxy? and how do we know how big it is just by looking at the cross section we are in? by friday_panda

The Gaia satellite is able to measure parallax with an unprecedented precision. Parallax is possible for the thousands that can be seen with the naked eye, and potentially any star in the Milky Way which we have a line of sight view.

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