What is parsec and parallax
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Yogita Ingle 4 years ago
Parsec (pc)
1 pc = 3.08 x 1016 m
One parsec (pc) is the distance to a star that subtends and angle of 1 arc second at an arc length of 1 AU.
Parallax is “the best way to get distance in astronomy,” said Mark Reid, an astronomer at the Harvard Smithsonian Center for Astrophysics. He described parallax as the “gold standard” for measuring stellar distances because it does not involve physics; rather, it relies solely on geometry.
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