NASA’s Nancy Grace Roman Space Telescope has successfully launched aboard a SpaceX Falcon Heavy rocket from Kennedy Space Center in Florida, marking the start of a landmark mission to explore dark energy, dark matter, and distant exoplanets. The observatory lifted off on August 30, 2026, and is now traveling toward the Sun-Earth L2 Lagrange point, roughly one million miles from Earth.
Often described as a successor to the Hubble Space Telescope, Roman combines Hubble-level image quality with a field of view about 100 times larger, enabling astronomers to survey vast regions of the universe far more efficiently. Scientists expect the telescope to map billions of galaxies, investigate the forces driving the universe’s expansion, and discover thousands of new worlds beyond our solar system.
The observatory carries two primary instruments. The Wide Field Instrument, equipped with 18 infrared detectors, will conduct vast sky surveys. It will produce high-resolution images and help scientists study dark energy, dark matter, galaxy evolution, and exoplanets. Roman's second instrument, the Coronagraph Instrument, will demonstrate technologies for direct imaging of planets around other stars. It is designed to block the light of stars and then photograph the worlds and dusty disks orbiting them.
The data that Roman gathers to measure the expansion of the Universe will be combined with data from other telescopes, including the Euclid Space Telescope and the Vera C. Rubin Observatory. Will Percival, Canada’s lead researcher on the team using the Roman Telescope to measure the expansion of the Universe, is enthusiastic about the mission: “Putting them all together and getting that full picture across, basically, all of the history of the Universe is going to be very exciting.”
Lisa Dang is equally excited about Roman’s scientific potential. “Roman will be transformative for exoplanetary science and understanding how planetary systems like our own are born and evolve over time. More particularly, it will be able to find planets farther to their parent star, similar to Jupiter and Saturn which have been difficult to find so far. Then we will know if our Solar System is truly unique or if there are many systems like ours out there!"
WCA PhD candidate Andrea Crespi, who is part of the team led by Percival using Roman to measure the expansion of the universe, has his eye on the future. “It’s amazing to be part of this moment that is going to shape the cosmology of tomorrow.”