About me Group Leader at the Leibniz-Institute for Astrophysics Learn more Research Satellite galaxy planes, dwarf galaxies, near-field cosmology. Learn more Publications List of peer-reviewed papers and other publications Learn more Travel Upcoming trips and talks, and a list of past presentations Learn more Photography Have a look at my street photography website 8minutesold.com external website Recent News Recognized by the jury of the “SUPERvisor Award” August 9, 2025 “Best Research Environment” Award June 8, 2025 New paper in Nature Astronomy! April 11, 2025 My popular science book is published November 19, 2024 Two new videos (in German) March 26, 2024 Elsewhere: Twitter BlueSky Instagram LinkedIn