Thirty Meter Telescope

Astronomy's Next-Generation Observatory

Explore the latest news, events and announcements from the TMT International Observatory

February 3rd, 2023 • Press Coverage
New Project Director for NOIRLab US-ELT Program Appointed
February 1st, 2023 • News
India TMT Coordination Centre Produces TMT Main Mirror Roundel
January 27th, 2023 • News
Call for TMT International Science Development Teams (ISDTs) Applications
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January 23rd, 2023 • Photograph
TMT M1 Roundel (SN050) produced by ITCC
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January 13th, 2023 • Photograph
TMT and the US Extremely Large Telescope Program Teams at AAS 241
January 13th, 2023 • Press Coverage
In Hawaii, new state panel stirs hope for giant telescope
December 22nd, 2022 • News
TMT 2022 Holiday Card
December 22nd, 2022 • Press Coverage
Students propose Hawaiian names for exoplanet, star
December 22nd, 2022 • Press Coverage
Eye on the Universe: India To Help Build World’s Largest Thirty-Metre Telescope
January 8th, 2023 • Conference
TMT will be at #AAS241 in Seattle
December 1st, 2022 • Press Coverage
Giant telescopes take small but significant steps toward realization
November 21st, 2022 • Press Coverage
Thirty Meter Telescope International Observatory: Coherent Supplies Optics for Ambitiou...
November 17th, 2022 • News
TMT Segment Mount Undergoes Tests in the Netherlands
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November 17th, 2022 • Collage
TMT SSA Module Acceptance Test Tool (SMATT)
November 16th, 2022 • News
TMT Promotes Science at UCLA’s “Exploring Your Universe 2022”
November 10th, 2022 • News
2022 AstroDay West Hawaiʻi
October 28th, 2022 • Press Coverage
Edward Stone Retires After 50 Years as NASA Voyager’s Project Scientist
November 16th, 2022 • Educational
Exploring Your Universe
October 19th, 2022 • News
MODHIS Completes First Phase of Conceptual Design Review
October 12th, 2022 • News
Updates for TMT Telescope Structure and Utility Services
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September 12th, 2022 • Photograph
Imiloa Center welcomes students from Nago Japan
August 26th, 2022 • Press Coverage
A New Stewardship Paradigm for Maunakea
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July 28th, 2022 • Photograph
TMT at SPIE Astronomical Telescopes & Instrumentation 2022
July 19th, 2022 • News
National Science Foundation Begins Environmental Review Process

What is TMT?

The Thirty Meter Telescope is one of a new class of extremely large telescopes that will allow us to see deeper into space and observe cosmic objects with unprecedented sensitivity and detail.

What will TMT Explore?

TMT will be a unique tool for probing many outstanding open questions in astronomy. ●

Who is building TMT?

The Thirty Meter Telescope is being designed and developed by the TMT International Observatory LLC (TIO).

Our Story So Far ...

In 2009, the Thirty Meter Telescope International Observatory (TIO) selected Maunakea, on Hawaiʻi Island, as the preferred site to build and operate TMT after a rigorous five-year campaign that spanned the globe.

Latest From TMT

India TMT Coordination Centre Produces TMT Main Mirror Roundel
February 1st, 2023 Engineering & Technology

The second TMT India roundel has been completed! The roundel was polished at the Coherent facilities in Richmond, California by the India TMT Coordination Centre (ITCC) staff, using ITCC equipment under the supervision of Coherent’s staff.

Call for TMT International Science Development Teams (ISDTs) Applications
January 27th, 2023 Science & Astronomy

TMT is currently accepting applications for its International Science Development Teams (ISDTs) until March 1, 2023.