NASA’s Nancy Grace Roman Space Telescope Launches to Uncover the Universe’s Darkest Secrets

Once fully operational, the Nancy Grace Roman Space Telescope will combine sharp infrared vision with an exceptionally wide field of view. This unique capability will enable astronomers to survey enormous regions of the universe and study cosmic history across billions of years. Roman’s primary science objectives include investigating dark matter, dark energy, and planets beyond our solar system, known as exoplanets. Its extensive sky surveys are also expected to lead to discoveries far beyond these core goals.

“Roman is exactly the success story we want to see across NASA,” said NASA Administrator Jared Isaacman. “Achieved ahead of schedule and on budget, this mission reflects more than a decade of dedication by NASA employees and industry partners. Roman will now provide us with a new space atlas, push the boundaries of discovery, and demonstrate what is possible when America’s space program combines bold ambition with disciplined execution.”

NASA’s Roman Space Telescope begins its journey into deep space

Mission controllers at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, began receiving telemetry from the Roman Space Telescope just seven minutes after liftoff. The Falcon Heavy rocket performed as planned and separated from the observatory 31 minutes after launch. After separation, the rocket’s two boosters successfully returned to the launch site for potential refurbishment and reuse.

“Roman will be a discovery machine that will bring us closer than ever before to answering humanity’s deepest questions about the history of the universe,” said Nicky Fox, deputy administrator for NASA’s Science Mission Directorate at NASA Headquarters in Washington. “With its wide field of view and rapid research speed, Roman will usher us into a new era of discovery, make the invisible visible, and lay the foundation for humanity’s search for life beyond our solar system.”

During the early phase of the mission, Roman will communicate with flight controllers through NASA’s Near Space Network. This system of ground stations and relay satellites supports spacecraft tracking, telemetry, and command operations. About 70 minutes after launch, communications will transition to NASA’s Deep Space Network, which will help guide the observatory toward L2, located approximately 1 million miles from Earth.

L2 is a region where the gravitational forces of the Sun and Earth help a spacecraft maintain a relatively stable position while conserving fuel. Roman will initially communicate through the Canberra Deep Space Communications Complex in Australia. After approximately six hours, communications will transfer to the Madrid Deep Space Communications Complex in Spain, followed by the Goldstone Deep Space Communications Complex in California. Together, these facilities provide near-continuous communication with the spacecraft throughout its journey.

Roman’s major systems will deploy after launch

One hour and 23 minutes after liftoff, the mission team confirmed that Roman’s solar panels and lower instrument sunshade had successfully deployed.

Over the following days, engineers will deploy the telescope’s high-gain antenna and visor-like aperture cover. Mission controllers will also perform the first of two planned course corrections and activate Roman’s coronagraph instrument.

The coronagraph will demonstrate technology that could support future missions, including NASA’s Habitable Worlds Observatory concept. That observatory would directly image Earth-like planets, a challenging task because a host star can be billions of times brighter than the planet orbiting it. Coronagraphs block much of the star’s light, making nearby planets easier to detect. Roman will advance this technology by capturing images of planets as large as Jupiter.

Roman’s 300-megapixel infrared view of space

A few weeks into its journey, Roman’s primary science instrument, the Wide Field Instrument, will be activated.

The instrument features a 300-megapixel infrared camera with 18 4K detectors, each roughly the size of a saltine cracker. These detectors collect photons from distant celestial objects and transform them into detailed wide-field images of the universe.

The Roman Space Telescope is engineered to remain optically stable while rapidly moving from one target to another. This design will allow it to survey enormous areas of the sky without lengthy pauses between observations. NASA estimates that Roman will explore the universe approximately 1,000 times faster than the Hubble Space Telescope.

This speed is one of Roman’s greatest scientific advantages. Hubble produces extremely detailed images of relatively small areas of the sky, while Roman will combine comparable sharpness with a much wider field of view. As a result, astronomers will be able to study vast populations of galaxies, stars, and planets in a fraction of the time previously required.

First Roman Space Telescope images expected in early 2027

During the remainder of the three-month commissioning period, NASA scientists and engineers will test, calibrate, and fine-tune Roman’s instruments. These critical steps will help ensure that the observatory is operating accurately before its full science mission begins.

NASA expects to release the first images from the Nancy Grace Roman Space Telescope in early 2027.

Once scientific operations begin, Roman will send approximately 1.4 terabytes of data to Earth each day. That will represent the highest daily data rate ever achieved by a NASA astrophysics mission. Managing this enormous volume of information will require advanced analysis methods in addition to traditional astronomical research.

Machine learning, artificial intelligence, and citizen scientists will help researchers analyze Roman’s observations and identify potentially important discoveries. Astronomers can then study the most promising targets in greater detail.

“We’ve never been able to see the universe the way Roman does before,” said Julie McEnery, Roman’s senior project scientist at NASA Goddard. “There’s no telling what more we’ll know and see by this time next year.”

NASA’s next major astrophysics mission

Roman will be NASA’s fourth major mission launched on a Falcon Heavy rocket. Earlier this year, NASA’s Launch Services Program worked with SpaceX to move up the launch date after the telescope was completed ahead of schedule.

NASA Goddard is managing the Roman mission with contributions from NASA’s Jet Propulsion Laboratory in Southern California and Caltech/IPAC in Pasadena, California. The Space Telescope Science Institute in Baltimore and scientists from research institutions around the world will also participate in the mission.

Major industrial partners include BAE Systems Inc., L3Harris Technologies, and Teledyne Scientific & Imaging. International contributions are being provided by the European Space Agency, the Japan Aerospace Exploration Agency, France’s CNES space agency, and Germany’s Max Planck Institute for Astronomy.