Astronomy

51 Pegasi

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Star & Planet

R Coronae Borealis Star

R Coronae Borealis Star

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astronomy

Cosmic Neutrino Background

Cosmic Neutrino Background

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astrophysics

Reflection Nebula

Reflection Nebula

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astronomy

Sandage, Allan

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American astronomer

Chamaeleon

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constellation

Sunyaev, Rashid

Sunyaev, Rashid

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Biography, Sunyaev-Zeldovich Effect, & Facts

Cosmic Background Explorer

Cosmic Background Explorer

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United States satellite

Caloris

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impact basin, Mercury

Very Large Array

Very Large Array

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telescope, New Mexico

Armillary Sphere

Armillary Sphere

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astronomy

Trumpler, Robert Julius

Trumpler, Robert Julius

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American astronomer

Luna-Resource

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Description & Facts

Optical Telescope

Optical Telescope

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History, Types, & Facts

Hydra

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constellation

Clementine

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spacecraft

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