Lecture 1: The Sky in X-Rays
 

• The Spektr-RG space observatory and its X-ray telescopes

• An X-ray map of the entire sky, showing millions of X-ray sources — quasars, active galaxies, stars, supernova remnants, clusters of galaxies, and the Milky Way itself

• The amazing system SS 433 and its surrounding radio nebula W 50: powerful baryonic jets, shock waves, and the origin of cosmic rays
  
  
  
  
  
   

Lecture 2: Clusters of Galaxies – The Most Massive Objects in the Universe
 

• How clusters of galaxies helped reveal the existence of dark matter

• The thermal Sunyaev–Zeldovich (tSZ) effect — how it allows us to find clusters of galaxies across the entire observable Universe

• The kinematic Sunyaev–Zeldovich (kSZ) effect — how we can measure the motion of galaxies relative to the expanding Universe