My name is Marja Seidel and I am a postdoctoral researcher at the Carnegie Observatories in Pasadena, California, working on galaxy evolution. Combining observations and numerical simulations, I try to better understand the formation of galaxy disks and the influence of dark matter.

At Carnegie, I am working mainly with Barry Madore, including on a cross-disciplinary project called "Observing the Invisible" which is a collaboration with science philosophers. I am also part of the international team TIMER. We aim at establishing when in cosmic history galactic discs became dynamically mature.

Apart from being a researcher, I am a dedicated science communicator in worldwide outreach events and expeditions and an outdoor and airborne sports enthusiast.

In October 2015, I finished my PhD in astrophysics at the Instituto de Astrofísica de Canarias on the Canary islands in Spain and was part of Jesús Falcón-Barroso's research group Traces of galaxy formation.

In between, I was heavily involved in scientific outreach, in particular leading several projects and expeditions, e.g., with Galileo Mobile in Peru and with the Cielo y Tierra project in Colombia.

Before my PhD, I completed my undergraduate studies in Physics and Earth and Space Sciences at Jacobs University in Bremen, Germany.