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How NASA Plans to Build the Habitable Worlds Observatory

We’ve been covering the journey of the Habitable Worlds Observatory for some time now. Over the past few years, it's gone from a proposal to a relatively fleshed-out plan for how and what the next Great Observatory should do—in this case, look at and characterize potentially habitable exoplanets. Back in August 2024, NASA set up the HWO Technology Maturation Project Office (TMPO) to coordinate the technological and scientific development needed to make the mission a success. They recently released a comprehensive plan for the first steps of that process in pre-print form on arXiv, and it’s very clear on what needs to happen before the Mission Concept Review (MCR) at the end of the decade.

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