Cape canaveral: NASA has launched a new flagship space telescope designed to survey the cosmos on a scale never before attempted, seeking to shed light on two of the universe's deepest mysteries: dark matter and dark energy. The Nancy Grace Roman Space Telescope lifted off Sunday aboard a SpaceX Falcon Heavy rocket from Kennedy Space Center in Florida. It now joins the Hubble and James Webb space telescopes as NASA's third active flagship observatory, but is built for a fundamentally different kind of job, emphasizing speed and scale over close-up detail.
According to Anadolu Agency, NASA Administrator Jared Isaacman described Roman as a mission that will provide "a new atlas of the universe." Named after Nancy Grace Roman, NASA's first chief astronomer and an early champion of space-based observatories, the telescope carries a 2.4-meter (7.9-foot) primary mirror - the same size as Hubble's. However, its wide-field camera can capture an area of sky that mission scientists say is roughly 100 times larger than Hubble's infrared instrument in a single shot, while matching Hubble's image sharpness. This combination of a wide view and high resolution is unusual, as most telescopes trade one for the other.
The Roman Space Telescope's primary mission is set to last five years, with a goal of operating for up to 10 years. Unlike Hubble, which circles roughly 300 miles above Earth, Roman is headed to a gravitationally stable point in space known as the second Sun-Earth Lagrange point, or L2, located about 1.5 million kilometers (930,000 miles) from Earth. That is the same neighborhood occupied by the Webb telescope. The journey will take more than three months, after which Roman will spend additional weeks on calibration before science operations begin, with first images expected around January.
Roman's science mission centers on three broad goals: exploring dark energy, mapping dark matter, and discovering exoplanets. Roman will map the large-scale structure of hundreds of millions of galaxies across cosmic time, testing whether dark energy is constant or changes over time. Its wide surveys are expected to trace how dark matter's gravity has shaped the distribution of galaxies since the Big Bang. Additionally, Roman will search for exoplanets using a technique called gravitational microlensing, potentially revealing tens of thousands of new exoplanets.
Beyond its headline goals, Roman's data archive will be made publicly available and is expected to support research well beyond the mission's original scope. The observatory is expected to downlink about 1.4 terabytes of data each day, with machine learning, artificial intelligence, and citizen scientists helping to process the volume. First public images are targeted for early 2027.
Dark energy and dark matter together are thought to account for the vast majority of the universe's total mass and energy, yet neither has been directly observed. Understanding them is considered one of the central unsolved problems in modern physics and cosmology. Nicky Fox, NASA's associate administrator for science, stated, "Roman will be a discovery machine that will bring us closer than ever before to answering humanity's most profound questions about our cosmic history."
NASA has described the three flagship telescopes - Hubble, Webb, and Roman - as complementary rather than competing, each suited to different kinds of observations. The mission also carries symbolic weight tied to its cost and schedule. NASA said Roman launched about eight to nine months ahead of its most recent target and within its roughly 4.3 billion dollar budget, an unusual outcome for a large space science mission and one NASA leadership has held up as a model for future projects.