Agnès Acker, née Keller, (born 28 January 1940 in Thann, Haut-Rhin)[1] is a French astrophysicist, professor emeritus of the University of Strasbourg, founder of the Strasbourg Planetarium and founding president of the Association of French-speaking Planetaries (APLF).

Her research focuses on the late stages of solar-type star evolution: planetary nebulae, binarity of nuclei, stellar winds.

[2] Acker holds a State Doctorate from 1976 at the University of Strasbourg under the title Cinématique, âge et binarité des noyaux de nébuleuses planétaires.

In the specific field of planetaria,[4] Acker has been project manager of several European Planetarium shows in APLF / ESO partnership: Les mystères du ciel austral (2002), ALMA : la quête de nos origines cosmiques (2009), L'eau : une aventure cosmique (2012).

[4] Acker is the author or co-author of more than 200 articles in international astrophysics journals[5] and many educational and scientific publications.