Nancy Grace Roman Space Telescope (original) (raw)

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Illustration shows a person with a darker complexion standing at the center from the chest up. She is in front of a podium and motioning, with raised arms. She’s wearing a long-sleeved top with a high neckline. To the left and right are representations of six semi-transparent screens in a range of sizes. They show stars, galaxies, and graphed data. The background is dark, but has a clear patterning of vertical lines made up of 0s and 1s.

The Nancy Grace Roman Space Telescope is a Hubble-sized telescope that will revolutionize astronomy by building on the science discoveries and technological leaps of the Hubble and James Webb space telescopes. The Roman Project is currently planning for observatory launch in late 2026.

Roman will provide a panoramic field of view that is 200 times greater than Hubble's infrared view, leading to the first wide-field maps of the universe at space-based resolution. Roman will combine the power of imaging and spectroscopy in synergy with other observatories to gain fresh insights into the universe through focused surveys and General Astrophysics observations.

Using a wide field instrument, Roman will survey billions of galaxies and catch the light of stellar explosions in a quest to solve the mystery of dark energy, which is causing the universe’s expansion to speed up. Roman’s scans of the sky will uncover thousands of exoplanets beyond our solar system, including types of planets never surveyed before.

Beyond these two primary goals, Roman will probe a range of additional astrophysical and planetary science topics such as stars in neighboring galaxies, supermassive black holes in faraway galaxies, cosmic nurseries where stars and planets come to life, and small bodies in our solar system.

Roman's Key Science Themes


Massively multiplexed spectroscopy is revolutionizing our understanding of the universe by enabling efficient, statistically robust surveys across large cosmic volumes. By capturing...


Many of Roman's key science objectives require precise point spread function (PSF) calibration. In particular, weak gravitational lensing studies depend on measurements of very...


Join us for Part 2 of our Roman Proposal FAQs and get your Roman questions answered! The Cycle 1 Proposal Deadline is March 17, 2026. We will present frequently asked questions...

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