Once launched, NASA's Nancy Grace Roman Space Telescope will map the universe’s expansion, spotting thousands of supernova explosions up to 11 billion years in the past and showing how dark energy has shaped the cosmos. Explore on: https://www.nasa.gov/missions/roman-space-telescope/nasa-roman-core-survey-will-trace-cosmic-expansion-over-time/?utm_source=newsletter&utm_medium=email&utm_campaign=nn202532 | NASA 360