View Full Version : GAIA is “Go” for Science After a few Minor Hiccups

2014-Jul-29, 06:10 PM
In astronomy we throw around the term “light-year” seemingly as fast as light itself travels. And yet actually measuring this distance is incredibly tricky. A star’s parallax — its tiny apparent shift once a year caused by our moving viewpoint on Earth — tells its distance more truly than any other method. Accurate parallaxes of […]

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