Galaxy cluster

Image credits: NASA, ESA, and J. Lotz and the HFF Team (STScI)


The Oskar Klein Centre welcomes you to a special celebration for our 10th anniversary : a public lecture by Prof. Katherine Freese followed by a discussion with special guest Prof. Sean Carroll.

Dark Matter in the Universe

Lecture by Katherine Freese

The ordinary atoms that make up the known universe, from our bodies and the air we breathe to the planets and stars, constitute only 5% of all matter and energy in the cosmos. The remaining 95% is made up of a recipe of 25% dark matter and 70% dark energy, both nonluminous components whose nature remains a mystery. Freese will recount the hunt for dark matter, from the discoveries of visionary scientists like Knut Lundmark and Fritz Zwicky, who argued for the existence of dark matter in the 1930’s, to the deluge of data today from underground laboratories, satellites in space, and the Large Hadron Collider. Theorists contend that dark matter consists of fundamental particles, and candidates include axions and WIMPs, or weakly interacting massive particles. Billions of them pass through our bodies every second without us even realizing it, yet their gravitational pull is capable of whirling stars and gas at breakneck speeds around the centers of galaxies, and bending light from distant bright objects. In this talk Freese will provide an overview of this cosmic cocktail, including the evidence for the existence of dark matter in galaxies. Stockholm University’s Oskar Klein Centre is one of the premier places in the world for research on these topics.  Many cosmologists believe we may be on the verge of solving this mystery, which will be an epochal discovery in humankind's quest to understand the universe.


Katherine Freese
Prof. Katherine Freese

Dr. Katherine Freese is Professor of Physics at Stockholm University and the George E. Uhlenbeck Professor of Physics at the University of Michigan (USA), she is an Honorary Stockholm University Doctorate, and author of the book The Cosmic Cocktail. She has been working to identify the dark matter and dark energy that permeate the universe as well as to build a successful model for the early universe immediately after the Big Bang.



Prof. Sean Carroll

Dr. Sean Carroll, Professor of Theoretical Physics at the California Institute of Technology, is the author of many popular science books and the blog, Preposterous Universe. He is specialized in quantum mechanics, gravitation, cosmology, statistical mechanics, and foundations of physics.



The Oskar Klein Centre (OKC), named for the late outstanding theoretical physicist from Stockholm University, combines particle physicists, cosmologists, and astrophysicists from the Departments of Physics and Astronomy at Stockholm University and the Department of Physics at the Royal Institute of Technology.

The Centre was created in 2008 due to a unique 10-year Linnaeus grant from the Swedish Research Council. Currently the OKC comprises more than 140 scientists who are organized into four working groups in order to tackle some of our Universe's most exciting and mysterious problems.  


Getting there:

The event will take place in Kungasalen at The Royal College of Music (Kungliga Musik Högskolan). The nearest T-bana station is Stadion.