Physics of galaxies and cosmology

An exciting time has arrived to study the general characteristics of the universe. High-quality data is collected on an unprecedentedly large scale using a wide variety of ground-based and space-borne telescopes and detectors. The collected data allows us to address the most fundamental and exciting questions in physics: the nature of dark matter and dark energy, the properties of the early universe, and the formation of structures in the universe at various scales, from galaxies to the most extensive known formations - galactic superclusters and filaments.

Galaxies are the largest single objects in the universe. Some of the most important processes in the universe occur in galaxies: the circulation of cosmic matter from gas to stars and back, and the enrichment of matter with various chemical elements. In Tartu Observatory we research the structure and composition of nearby and distant galaxies. We also study how neighboring galaxies influence the formation of galaxies and the general distribution of matter around galaxies. Recently, we have focused on disc-bulge separation of galaxies and investigated the dependence of galaxy properties in the large-scale structure.

The employees of the department



For students

Students have the opportunity to attend courses in cosmology and galactic physics, come for an internship, or find a thesis topic and supervisor in this department.

Courses in astrophysics

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KuupKulgur - Tartu observatoorium - Tartu Ülikool

Scientists and students to develop the first Estonian lunar rover


Doctoral defence: Toni Tuominen “Missing baryons and the large-scale structure of the universe”

On 10 March at 13, Toni Tuominen will defend his PhD thesis on "Missing baryons and the large-scale structure of the universe".
EXOHOST kick-off meeting - Tartu observatoorium - Tartu Ulikool

Tartu Observatory's stellar physicists take Estonia to a level of excellence in exoplanetary star research