NASA to unveil Nancy Grace Roman Space Telescope ahead of Florida launch as early as fall 2026

NASA is set to give a first look at its next flagship observatory, the Nancy Grace Roman Space Telescope, during a media event on Tuesday, April 21, at the agency’s Goddard Space Flight Center in Greenbelt, Maryland. The unveiling comes months before the spacecraft is shipped to Florida for launch preparation.

NASA says the mission could lift off from Kennedy Space Center as early as fall 2026 on a SpaceX Falcon Heavy, with a launch window extending to May 2027. The fully integrated telescope was recently assembled at Goddard, and NASA is wrapping up prelaunch testing.

A news conference is scheduled for 4 p.m. ET on April 21 at the facility and will be livestreamed on NASA’s YouTube channel. The event, described as one of the final chances to see the complete observatory before launch, is led by NASA Administrator Jared Isaacman and is not listed as a scheduled event on NASA+, the agency’s free online streaming service.

Named for NASA’s first chief astronomer, the Roman Space Telescope is designed to expand the agency’s view of the universe and work in concert with the Hubble and James Webb space telescopes. Equipped with two advanced science instruments, it will conduct wide-field infrared observations from about 930,000 miles away while oriented opposite the Sun.

NASA says the mission aims to study the nature of dark matter and dark energy and to reveal hundreds of millions of galaxies. The telescope’s panoramic field of view is central to its design, allowing it to spot phenomena that other observatories can then examine in detail.

It is also expected to discover thousands of exoplanets—worlds beyond our solar system—primarily using gravitational microlensing. “Roman’s much larger field of view will reveal many such objects that were previously unknown,” Julie McEnery, Roman’s senior project scientist, said in a 2023 statement.

“Since we’ve never had an observatory like this scanning the cosmos before, we could even find entirely new classes of objects and events.” Once shipped to Cape Canaveral, the telescope will be prepared for launch atop a SpaceX Falcon Heavy.

Depending on progress in the remaining test campaign, NASA says the mission could launch between fall 2026 and May 2027, positioning Roman to join Hubble and Webb in probing some of astronomy’s most fundamental questions.