What are dark energy and dark matter? Neil deGrasse Tyson and Chuck Nice learn about the Euclid Mission and our latest efforts to uncover the secrets of The Dark Universe with JPL Researcher, Jason Rhodes. If dark energy is spreading out and getting thinner, how do you get more of it? Learn more about dark energy as a property of spacetime, how we verify dark energy, and the Nancy Grace Roman Space Telescope set for launch in 2027. Discover how the Nancy Grace Roman and the Euclid Space telescope will help us find out more about the nature of dark energy and dark matter. Could there be black holes made out of dark matter? We discuss how scientists deal with only using images of the distant past and whether agencies collaborate or are competitive with each other. What is the Great Attractor? Find out about this fascinating feature of our Universe. Why do we assume dark matter is matter? What is space? Are dark energy and dark matter good names for these phenomena? What happens when gravity waves collide? Learn about an European Space Agency mission, LISA, that will put lasers in space to detect gravitational waves. What methods did Euclid use to explore dark energy? Plus, why is it called the Euclid mission? Does it have anything to do with geometry? Thanks to our Patrons Florian Mueller, Bartek Moryc, Lorena Pereira, Leon Helmink, Stephan Marty, sam jones, and Phillip Berryhill for supporting us this week. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free. Get the NEW StarTalk book, 'To Infinity and Beyond: A Journey of Cosmic Discovery' on Amazon: https://amzn.to/3PL0NFn Support us on Patreon: https://www.patreon.com/startalkradio FOLLOW or SUBSCRIBE to StarTalk: Twitter: http://twitter.com/startalkradio Facebook: https://www.facebook.com/StarTalk Instagram: https://www.instagram.com/startalk About StarTalk: Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up! #StarTalk #neildegrassetyson Timestamps: 00:00 - Introduction: Euclid Mission 2:02 - What is Dark Energy? 10:23 - Telescopes on Space Balloons 16:00 - Could There Be a Black Hole Made of Dark Matter? 19:39 - How Are Scientists Dealing with Outdated Images? 23:30 - What is The Great Attractor? 27:11 - Why Do We Assume Dark Matter Is Matter? 33:46 - Gravitational Waves Colliding 37:02 - How Will Euclid Explore Dark Energy? 40:49 - What Does the Euclid Mission Have to Do with Geometry?