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History
Friedrich Georg Wilhelm von Struve
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Friedrich Georg Wilhelm von Struve was a Baltic German astronomer and geodesist. He is best known for studying double stars and for initiating a triangulation survey later named Struve Geodetic Arc in his honor.
Von Struve
Von Struve
Friedrich Georg Wilhelm von Struve
Friedrich Georg Wilhelm von Struve
Double star
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In observational astronomy, a double star or visual double is a pair of stars that appear close to each other as viewed from Earth, especially with the aid of optical telescopes.
Astronomers have mistakenly reported observations of a double star in place of J 900 and a faint star in the constellation of Gemini.
Astronomers have mistakenly reported observations of a double star in place of J 900 and a faint star in the constellation of Gemini.
Artist's impression of the discs around the young stars HK Tauri A and B.
Artist's impression of the discs around the young stars HK Tauri A and B.