How a Canceled Spy Satellite Became NASA’s New Window Into the Universe

How a Canceled Spy Satellite Became NASA’s New Window Into the Universe: The Nancy Grace Roman Space Telescope, scheduled to launch on Sunday, will study dark energy and discover a multitude of planets. By Kenneth Chang NASA’s new Nancy Grace Roman Space Telescope could unveil clues to the mysterious dark energy that accelerates the expansion of the universe, and discover more than 100,000 planets outside of our solar