A project to construct the largest telescope in the Northern Hemisphere on Mauna Kea in Hawaii has received a new opportunity with Spain offering fresh funding and a new site on La Palma island. The international Thirty Meter Telescope (TMT) was originally planned for Mauna Kea but faced opposition from Hawaiian Indigenous communities due to the mountain’s cultural significance, leading to delays and increased costs.
Spain has proposed €400 million to support the TMT’s construction on Roque de los Muchachos in La Palma, part of the Canary Islands. Despite concerns raised by a local environmental group, Ben Magec-Ecologists in Action, about the project’s relocation to Spain, the future of the initiative remains uncertain.
The TMT, designed with a large primary mirror for enhanced light-gathering capabilities, is one of three “megatelescopes” under development globally. While Mauna Kea was initially favored for its ideal conditions, ongoing protests and opposition have prompted a shift to La Palma. The delays and rising costs emphasize the importance of consulting Indigenous communities in large-scale projects to avoid complications and financial burdens.