TMT is committed to a community model of astronomy based on the values of respect and mutual stewardship.
Read the continuing story about how TMT is the best in the world at what it does.
Maunakea is a truly unique place and TMT is part of the Hawaiʻi community and firmly believes it is our kuleana (responsibility) to be active supporters of that community.
TMT is an extraordinary international scientific endeavor that will revolutionize our understanding of the universe and our place within it.
The Tertiary Mirror Support System and Positioner Assembly (M3SSPA) has now successfully completed its Preliminary Design Phase after the Preliminary Design Review (PDR) was held at NOIRLab in Tucson, Arizona on August 11–12, 2025.
TIO team members attended last week’s conference on the Habitable Worlds Observatory (HWO; a NASA missoin designed to look for signs of life on planets orbiting other stars), where they shared insights on segmented mirror technology and next-generation instrumentation.
We remain committed to securing the best possible site and will evaluate Spain’s offer thoroughly and promptly.
