What is the history of lyra?
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What is the history of lyra?
Lyra Latin for lyre, from Greek is a small constellation. It is one
of 48 listed by the 2nd century astronomer Ptolemy, and is one of the
88 constellations recognized by the International Astronomical Union.
Lyra was often represented on star maps as a vulture or
an eagle carrying a lyre, and hence sometimes referred to as Aquila
Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered
by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the
northern hemisphere from spring through autumn, and nearly overhead, in
temperate latitudes, during the summer months. From the southern
hemisphere, it is visible low in the northern sky during the winter
months.
Vega, Lyra's brightest star is one of the brightest stars in the night sky, and forms a corner of the famed Summer Triangle asterism. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables. These binary stars are so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.
Vega, Lyra's brightest star is one of the brightest stars in the night sky, and forms a corner of the famed Summer Triangle asterism. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables. These binary stars are so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.
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