Why The Universe Doesn’t Add Up (And How We’re Going To Try To Figure It Out)

For decades, NASA’s Hubble Space Telescope has helped astronomers measure how fast the universe is expanding. But as those measurements have become more precise, scientists have uncovered a cosmic mystery: the universe appears to be expanding at different rates depending on how we measure it. Known as the Hubble tension, this discrepancy challenges our understanding of the cosmos and could point toward something missing from our current model of the universe. In this video, NASA scientists Jennifer Wiseman and Julie McEnery explore how Hubble helped transform our understanding of cosmic expansion, the mysterious role of dark energy, and how NASA’s Nancy Grace Roman Space Telescope will help investigate some of the biggest unanswered questions in cosmology. For more information, visit science.nasa.gov/mission/hubble Credit: NASA's Goddard Space Flight Center Paul Morris: Lead Producer Rob Andreioli: Videographer John Philyaw: Videographer Jennifer Wiseman Julie McEnery Music Credit: "Enceladus" by Jonathan Elias [ASCAP] and David Ashok Ramani [ASCAP] via ZFC Music [SESAC] and Universal Production Music This video can be freely shared and downloaded at https://svs.gsfc.nasa.gov/15112. While the video in its entirety can be shared without permission, the music and some individual imagery may have been obtained through permission and may not be excised or remixed in other products. Specific details on such imagery may be found here: https://svs.gsfc.nasa.gov/15112. For more information on NASA’s media guidelines, visit https://www.nasa.gov/multimedia/guidelines/index.html. See more Hubble videos on YouTube: https://www.youtube.com/playlist?list=PLiuUQ9asub3Ta8mqP5LNiOhOygRzue8kN Follow NASA's Hubble Space Telescope: · Facebook: https://www.facebook.com/NASAHubble · X: https://twitter.com/NASAHubble · Instagram: https://www.instagram.com/NASAHubble · Flickr: https://www.flickr.com/photos/nasahubble --- If you liked this video, subscribe to the NASA Goddard YouTube channel: https://www.youtube.com/NASAGoddard Follow NASA’s Goddard Space Flight Center · Instagram http://www.instagram.com/nasagoddard · X http://twitter.com/NASAGoddard · Facebook: http://www.facebook.com/NASAGoddard · Flickr http://www.flickr.com/photos/gsfc