NASA launches Nancy Grace Roman Space Telescope

Aug 30, 2026

NASA successfully launched the $4.3 billion Nancy Grace Roman Space Telescope on August 30, 2026, aboard a SpaceX Falcon Heavy rocket from Florida. Named after NASA's first chief astronomer, the repurposed spy satellite features a field of view 100 times wider than Hubble's. Stationed at Lagrange Point 2, the observatory will map dark matter, probe dark energy, and search for over 100,000 exoplanets using an experimental starlight-blocking coronagraph developed by the Jet Propulsion Laboratory.

Roman Space Telescope launch

▪The Nancy Grace Roman Space Telescope project cost approximately $4 billion to $4.3 billion and launched nine months ahead of schedule
▪The Nancy Grace Roman Space Telescope is traveling on a 90-to-100-day journey to Lagrange Point 2, located approximately 1.6 million kilometers from Earth
▪The Nancy Grace Roman Space Telescope has a planned five-year primary mission, with enough fuel to potentially extend operations for an additional five years
▪The Nancy Grace Roman Space Telescope was built using a repurposed spy satellite mirror originally designed for a terminated National Reconnaissance Office program and donated to NASA in 2012
▪NASA launched the Nancy Grace Roman Space Telescope from the Kennedy Space Center in Florida aboard a SpaceX Falcon Heavy rocket on August 30, 2026

Nancy Grace Roman legacy

▪The Nancy Grace Roman Space Telescope is named after Nancy Grace Roman, NASA's first chief astronomer and first female executive, who died in 2018 at age 93
▪The Nancy Grace Roman Space Telescope is the first flagship NASA space telescope to be named after a woman
▪Nancy Grace Roman was widely known as the 'Mother of Hubble' for her instrumental role in planning and securing congressional approval for the Hubble Space Telescope

Dark energy research

▪Scientists hope observations from the Nancy Grace Roman Space Telescope will help resolve the 'Hubble tension' discrepancy regarding the strength of dark energy in the early versus late universe
▪The Nancy Grace Roman Space Telescope will investigate dark energy, a hypothesized repulsive force that represents about 68 percent of the universe and drives its accelerating expansion
▪The Nancy Grace Roman Space Telescope will map dark energy by cataloging Type Ia supernovas, which serve as cosmic 'standard candles' due to their predictable brightness

Dark matter investigation

▪The Nancy Grace Roman Space Telescope will investigate dark matter, an invisible substance representing about 27 percent of the universe that acts as a gravitational glue holding galaxies together
▪The Nancy Grace Roman Space Telescope will map dark matter by measuring how its gravitational pull bends the light of distant galaxies, a phenomenon known as gravitational lensing
▪The Nancy Grace Roman Space Telescope will create a comprehensive 3D map of the cosmos by surveying more than two billion galaxies over a period of more than one year

Exoplanet detection capabilities

▪The Nancy Grace Roman Space Telescope is expected to discover tens of thousands of new exoplanets, potentially increasing the confirmed inventory from around 6,300 to over 100,000
▪The Nancy Grace Roman Space Telescope will search for exoplanets by detecting tiny drops in stellar brightness as planets transit their stars, and through gravitational microlensing
▪The Nancy Grace Roman Space Telescope has a field of view at least 100 times wider than the Hubble Space Telescope, allowing it to survey the sky much faster

Coronagraph technology

▪Technology demonstrated by the Coronagraph Instrument will inform the development of the future Habitable Worlds Observatory, which aims to image Earth-like planets one billion times dimmer than their stars
▪The Coronagraph Instrument, developed by NASA's Jet Propulsion Laboratory, can observe planets that are 100 million times dimmer than their host stars using a flexible mirror with near-atomic-scale precision
▪The Nancy Grace Roman Space Telescope carries an experimental Coronagraph Instrument designed to block out starlight to directly image planets orbiting their host stars