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COSMIC PHYSICS --- GEOMAGNETISM --- METEOROLOGY --- SUN
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Parallax. --- Stars --- Proper motion. --- Sun.
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Astronomy. --- Observatories. --- Planets. --- Stars. --- Transit-circle. --- United States. --- Sun. --- Mercury (Planet) --- Venus (Planet)
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Astronomy. --- Observatories. --- Planets. --- Stars. --- Transit-circle. --- United States. --- Sun. --- Mercury (Planet) --- Venus (Planet)
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