When scientists set out to measure what they expected to be a slow down in the expansion of the universe, they discovered the exact opposite: the expansion of the universe isn't slowing, but accelerating. The unknown forces behind this acceleration have been dubbed 'dark energy' - and Dr. Paul Sutter breaks down what we know about it, what we don't, and where current research is leading us.Find more with Dr. Paul Sutter here:Website: https://pmsutter.com/YouTube: https://youtube.com/paulmsutterTwitter: https://twitter.com/PaulMattSutterFacebook: https://facebook.com/PaulMattSutterInstagram: https://instagram.com/PaulMattSutterTiktok: https://tiktok.com/@paulmattsutter