Thirty Meter Telescope

Astronomy's Next-Generation Observatory

TMT's Mission and Values

TMT is committed to a community model of astronomy based on the values of respect, inclusion, and mutual stewardship.

TMT's Science and Technology

TMT is an extraordinary international scientific endeavor that will revolutionize our understanding of the universe and our place within it.

Maunakea

Maunakea is a truly unique place.

Community

TMT staff are part of the Hawaiʻi community and TMT firmly believes it is our kuleana (responsibility) to be active supporters of that community.

Latest From TMT

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TMT International Observatory Produces its 100th Polished Mirror
March 5th, 2024 Engineering & Technology

Today, the Thirty Meter Telescope (TMT) International Observatory (TIO) announces the completion of its 100th mirror segment. Ultimately, TIO will mosaic 492 of these segments to form an extremely large mirror 30 meters in diameter. This mirror will be the core component of the largest optical telescope in the Northern Hemisphere.

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NSB Announces Support Plans for US-ELTP
March 5th, 2024

The National Science Plan announces its support plan for the U.S. Extremely Large Telescope Program.

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ʻAle Lau Loa Global Youth Ambassador Program
February 26th, 2024 Community Engagement

The County of Hawaiʻi’s Sister City Program, in partnership with the Thirty Meter Telescope International Observatory, has launched a new initiative to promote cultural learning and exchanges between high school students, with an emphasis on sharing Hawaiian culture and knowledge.