The new Nancy Grace Roman space telescope is slated to launch this weekend. It was originally built for the National Reconnaissance Office as a spy satellite, but was never launched. Instead, NRO gave it to NASA about 15 years ago.

The more scientists try to understand dark energy, the more its mysteries seem to grow. NASA’s newest space telescope is custom-built to crack the case

NASA engineer Mark Melton explains how the Nancy Grace Roman Space Telescope will study dark energy, map the Milky Way and search for distant planets and galaxies.

Named for NASA astronomer, the Nancy Grace Roman Space Telescope, is scheduled for liftoff on board a SpaceX Falcon Heavy rocket on Sunday, Aug. 30.