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Habitable Worlds Observatory

HWO is a large infrared/optical/ultraviolet space telescope recommended by the National Academies’ Pathways to Discovery in Astronomy and Astrophysics for the 2020s.

HWO will be the first telescope designed specifically to search for signs of life on planets orbiting other stars. With a powerful set of instruments, it will also provide a platform for transformational astrophysics.

A mission that would search for and characterize habitable planets beyond our solar system.

NASA is further prioritizing its long-running search for life in the universe and laying the groundwork for its next flagship astrophysics mission after the Nancy Grace Roman Space Telescope (slated to launch by May 2027.)

Currently referred to as the Habitable Worlds Observatory (HWO), HWO builds upon studies conducted for two earlier mission concepts called the Large Ultraviolet Optical Infrared Surveyor (LUVOIR) and Habitable Exoplanets Observatory (HabEx.)

A diagram of an exo-solar system or a solar system outside our own. The image shows a star in the system's center; it is round and dark with a halo of blue and orange light around it. Four planets are orbiting around it, two very close to the star and two farther away. There is an arrow pointing to one of the planets on the inner orbits, with a label that says "Earth 2.0."
Simulated image of a Solar System analog 30 light-years away, as captured by a large Infrared/Optical/Ultraviolet space telescope.
STScI, NASA GSFC

Exploring the Trade Space

HWO’s engineers perform modeling with various telescope designs to make informed decisions about trade-offs, such as choosing the best balance between telescope size, instrument sensitivity, and stability.

Learn More about Exploring the Trade Space
Three telescope concepts for the Habitable Worlds Obervatory float on a white background. Moving from right to left, the first telescope is hexagonal mirror segments, the second is round with a keystone mirror in the center and 6 outer segments, and the final concept is round with various segments.

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