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Read more about NASA's Nancy Grace Roman Space Telescope After the Roman telescope launches, it’s set to spend more than three months journeying to its final destination, located roughly 1 million miles from Earth. The telescope is designed to live at a location in space known as L2, which is a Lagrange point, where the gravitational acceleration from the sun and Earth balance out, allowing the telescope to stay in a stable orbit. At L2, Roman should join another of NASA’s workhorse observatories, the James Webb Space Telescope, which launched in 2021.

Fox was in tears watching the action unfold. “It’s such a good day!” she said. Roman’s field of view is more than 100 times wider than that of NASA’s Hubble Space Telescope, still churning out celestial glamour shots after 36 years in orbit. Webb joined the effort several years ago with an even narrower yet spot-on vision capable of zooming in on objects almost as old as the universe-creating Big Bang.

Three primary surveys are planned over the course of the Roman telescope’s mission. During the largest one, which will last over a year, the telescope will peer through the Milky Way’s dense, star-packed center, known as the galactic bulge, building a vast catalog of all the astronomical objects it observes.

Retired NASA scientist Ed Weiler said the honor is long overdue. He coined the phrase “Mother of Hubble” for Roman, who hired him in 1978. Observatories above Earth’s obscuring atmosphere can see farther and better, she insisted after joining the brand new NASA in 1959. She died in 2018 at age 93.

Perhaps even more important, astronomers expect Roman to shed light on the dark matter and dark energy that make up most of the universe yet remain concealed. Roman’s catalog of galaxies will help scientists ascertain how quickly the universe is expanding due to these puzzling, unseen forces.