The Nancy Grace Roman Space Telescope launches in September 2026. It will map 100× more sky than Hubble per snapshot, hunt dark energy, and photograph exoplanet atmospheres — a complete guide to NASA's next great observatory.
Hubble at 34, Kepler's 2,600 exoplanets, James Webb's deepest infrared views, plus Nancy Grace Roman and Euclid — the space telescopes that rewrote astronomy.