SIO360: How Gravitational Lensing Helps Us Understand the Universe

Dr. Bryan Gillis is back! This time he's here to teach us about gravitational lensing. And along the way, we learn about dark matter and dark energy! What the hell are they? What the hell aren't they? Could you have a black hole made out of dark matter? So much fascinating stuff! Links: ESA Euclid Page, Euclid Wikipedia page, Vimeo Channel for the Royal Observatory.