NASA has launched the Nancy Grace Roman Space Telescope, a $4.3 billion observatory, to investigate dark energy, dark matter, and exoplanets. The telescope was launched aboard a SpaceX Falcon Heavy rocket from NASA’s Kennedy Space Center in Florida on August 30, 2026, and is headed to Lagrange Point 2, where it will join the Webb Space Telescope in orbit around the sun, approximately 1.6 million kilometers (1 million miles) from Earth. The journey to its destination is expected to take over three months. The mission is planned for five years, with the potential for an additional five years if a robotic tanker becomes available for refueling.
The Roman Space Telescope is designed to probe cosmic mysteries and is expected to discover thousands of new exoplanets while providing a statistical census of planetary systems similar to our own. It aims to shed light on dark matter and dark energy, which constitute most of the universe's content, with ordinary matter making up about 5 percent, dark matter about 27 percent, and dark energy about 68 percent.
The telescope’s main survey will cover over 2 billion galaxies and is expected to take more than a year to complete. Nicky Fox, chief of NASA’s Science Mission Directorate, stated that the telescope will find thousands of supernovae, tens of thousands of planets, billions of galaxies, and tens of billions of stars.
After launch, the rocket's twin side boosters returned to Cape Canaveral, and the telescope successfully separated from the rocket, prompting applause from ground control. The Roman Space Telescope is named after Nancy Grace Roman, NASA’s first chief astronomer, and is the first space telescope named after a woman. Retired NASA scientist Ed Weiler remarked that the honor is long overdue and noted Roman's significant contributions to astronomy.
The Roman Telescope has a field of view more than 100 times wider than that of the Hubble Space Telescope, which has been operational for 36 years. The James Webb Space Telescope, launched in 2021, has a different focus, capturing deep-space objects. NASA compares Roman to a camera’s wide-angle lens and Webb to a zoom lens, emphasizing their complementary capabilities.
The Roman Telescope will collaborate with the European Space Agency’s Euclid spacecraft and the National Science Foundation’s Vera C Rubin Observatory in Chile to address some of the universe's greatest mysteries. Julie McEnery, Roman’s senior project scientist, stated that Roman has similar sensitivity and sharpness of vision as Hubble but can survey the sky much faster. The ultra-sensitive Webb telescope will analyze details of the new worlds discovered by Roman.
The Roman Telescope faced budget cuts during the Trump administration, but Congress intervened to protect its funding.