Physics of the Cosmos
Exploring fundamental questions regarding the physical forces of the universe

Program News and Announcements

2 June 2023

NASA Creating Science, Technology, Architecture Review Team (START) for Habitable Worlds Observatory (HWO)

On Behalf of Dr. Mark Clampin

Dear Colleagues,

NASA is creating a Science, Technology, Architecture Review Team (START) to determine the science scope and needed observatory capabilities for the Habitable Worlds Observatory (HWO). HWO was prioritized by the 2020 Astrophysics Decadal Survey and is slated to be the NASA Astrophysics flagship mission that will follow the Nancy Grace Roman Space Telescope. HWO will directly image and characterize exoplanets and conduct a wide range of groundbreaking astrophysics observations in the ultraviolet-visible-near infrared wavelength range. The Dear Colleague Letter and detailed Terms of Reference can be found on the NASA Astrophysics Great Observatories Maturation Program (GOMAP) webpage at:

We are soliciting self-nominations for people to serve on the START. We want START to be composed of people from diverse backgrounds and disciplinary perspectives, and encourage scientists, engineers, and technologists with terminal degrees in their field to self-nominate.

For more information on the START self-nomination process, please see the Dear Colleague Letter. For more information on the duties of START and its relationship to other activities please see the Terms of Reference for the NASA Astrophysics HWO START.

Please also check the GOMAP website at for additional information. Questions may be addressed to

Thank you in advance for your interest in this exciting future project!


Mark Clampin
Director, Astrophysics Division

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