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There is something very, very strange happening to our universe. Some mysterious force—dark energy—has taken control of the cosmos, driving distant galaxies to move in ways that challenge our understanding of fundamental physics. We can't see it, we don't know what it is, and we’re not even sure how it can exist, yet it makes up about 70% of the universe, and it's growing. Join Katie Mack, Perimeter Institute’s Hawking Chair in Cosmology and Science Communication, as she unravels the enigma of dark energy in this episode of Cosmology 101. Sign up for our newsletter and download exclusive cosmology posters at: Follow the edge of theoretical physics on our social media: Follow our host “AstroKatie“ Katie Mack: Asset Credits: ESO, Anglo-Australian Observatory, Paul Bourke, Peter Morse, Glenn Rogers 6dF Galaxy Survey Perimeter Institute (charitable registration number 88981 4323 RR0001) is the world’s largest independent research hub devoted to theoretical physics, created to foster breakthroughs in the fundamental understanding of our universe, from the smallest particles to the entire cosmos. Be part of the equation:
