To understand our role in the universe, we have to explore the cosmos. Astrophysicist and author Dr. Janna Levin guides us in exploring the origins of the cosmos, black holes, string theory, and more! Plus, Dr. Levin answers a question from Hailey, who asks how we can measure a constantly-expanding universe, and from Victoria who’s been wondering if we’re living a holographic universe. You can listen to ad-free new episodes of Science Rules!, only on Stitcher Premium. For a free month of Stitcher Premium, go to stitcherpremium.com and use promo code ‘SCIENCE.'