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WR1367 Leitsterne und Geheimagenten
Ruth Gr\xfctzbauch ist Astronomin, betreibt in Wien ein\xa0Popup-Planetarium, und ich lasse mir von ihr erz\xe4hlen, was es am Himmel nicht zu sehen gibt, obwohl es dort ist. Darin: Luft \u2013 Radiowellen \u2013 Sagittarius A* \u2013 M87 \u2013 Aktive Optik \u2013 Adaptive Optik \u2013 Laser \u2013 K\xfcnstlicher Leitstern \u2013 Nancy Grace Roman Space Telescope