Alphard vs Etamin
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Alphard
Alphard, designated Alpha Hydrae, is an orange giant star located approximately 177 light-years from Earth. It is the brightest star in Hydra, which is the largest of the 88 modern constellations by total area. Historically known to astronomers as Cor Hydrae, meaning the heart of the hydra, it marks the physical center of the mythological sea serpent. The star's traditional name derives from the A...
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Etamin
Etamin, also known as Gamma Draconis, is an orange giant star in the constellation Draco, approximately 154 light-years from Earth. It is the brightest star in Draco by apparent magnitude. Astronomer James Bradley made repeated observations of Etamin between 1725 and 1728 seeking to measure its parallax, and from this data he discovered stellar aberration, evidence of Earth's orbital motion. The s...
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