Deep space communications

Deep space communications

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Galactic astronomy

Galactic astronomy

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The galactic center : feeding and feedback in a normal galactic nucleus : proceedings of the 303rd Symposium of the International Astronomical Union, held in Santa Fe, NM, USA, September 30-October 4, 2013 / edited by Loránt O. Sjouwerman, National Radio Astronomy Observatory, USA, Cornelia C. Lang, University of Iowa, USA, and Jürgen Ott, National Radio Astronomy Observatory, USA.

The galactic center : feeding and feedback in a normal galactic nucleus : proceedings of the 303rd Symposium of the International Astronomical Union, held in Santa Fe, NM, USA, September 30-October 4, 2013 / edited by Loránt O. Sjouwerman, National Radio Astronomy Observatory, USA, Cornelia C. Lang, University of Iowa, USA, and Jürgen Ott, National Radio Astronomy Observatory, USA.

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The amateur astronomer's guide to the deep-sky catalogs

The amateur astronomer's guide to the deep-sky catalogs

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