Cosmic Origins
Searching for answers about our universe and its origins

Program News and Announcements

23 February 2024

UVEX Selected as Next Astrophysics Medium-Class Explorer

NASA has selected a new mission to survey ultraviolet light across the entire sky to provide the agency with more insight into how galaxies and stars evolve. The space telescope, called UVEX (UltraViolet EXplorer), is targeted to launch in 2030 as NASA’s next Astrophysics Medium-Class Explorer mission.

In addition to conducting a highly sensitive all-sky survey, UVEX will be able to quickly point toward sources of ultraviolet light in the universe. This will enable it to capture the explosions that follow bursts of gravitational waves caused by merging neutron stars. The telescope also will carry an ultraviolet spectrograph to study stellar explosions and massive stars.

The telescope’s ultraviolet survey will complement data from other missions conducting wide surveys in this decade, including the Euclid mission led by ESA (European Space Agency) with NASA contributions, and NASA’s Nancy Grace Roman Space Telescope, set to launch by May 2027. Together, these missions will help create a modern, multi-wavelength map of our universe.

NASA selected the UVEX Medium-Class Explorer concept to continue into development after detailed review of two Medium-Class Explorer and two Mission of Opportunity concept proposals by a panel of scientists and engineers, and after evaluation based on NASA’s current astrophysics portfolio coupled with available resources. The UVEX mission was selected for a two-year mission and will cost approximately $300 million, not including launch costs.

The mission’s principal investigator is Fiona Harrison at Caltech in Pasadena, California. Other institutions involved in the mission include University of California at Berkeley, Northrop Grumman, and Space Dynamics Laboratory.

For more information about the Explorers Program, visit The Explorers Program

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