"NASA's Roman Telescope Measures Universe's Expansion Rate Through Rare Events"

NASA's Nancy Grace Roman Space Telescope, set to launch by May 2027, will be used to study rare gravitationally lensed supernovae in order to measure the expansion rate of the universe, known as the Hubble constant. These rare events will provide a unique way to explore the Hubble constant, complementing traditional methods based on brightness. The telescope's extensive surveys will cover more area than the Hubble Space Telescope, providing a wealth of data to sift through. A team is preparing for this study by creating data reduction pipelines and simulated imaging to detect these rare events, aiming to leverage the telescope's potential for cosmological research.