Lecturer: Professor of Astronomy Steen Hannestad, Department of Physics and Astronomy, Aarhus University
Dark matter and dark energy make up 95% of the universe, but we don’t actually know what it is. Without the dark matter, however, we, and life, would not exist. Does the latest research in cosmology reveal what the invisible universe really consists of?
We know the universe began in the Big Bang. We know it’s expanding faster and faster, but we don’t know for sure why. The most likely explanation is that our universe is filled with dark energy.
We also know that galaxies, including our own Milky Way, would never have been formed if the universe was not also filled with dark matter – an exotic type of matter that is invisible but affects its surroundings via gravity. Without dark matter, stars and planetary systems would also not have been formed and we, and life, would not exist.
At present, we know that dark matter and dark energy make up 95% of everything in the universe – but we don’t know what it actually is!
In the lecture, you are updated on the latest research in cosmology and we look at the perspectives for whether the research in the coming years can give us answers to what the invisible universe really consists of.