HONOLULU (AP) — A giant telescope planned for Hawaii's tallest mountain will enhance humanity's knowledge of the universe and bring quality, high-paying jobs, supporters said as protesters blocked construction for a second week.

An international consortium plans to build the $1.4 billion Thirty Meter Telescope at the top of Mauna Kea, which some Native Hawaiians believe is sacred. Protesters blocked the road to the top of the mountain for the 12th day Friday after more than 100 telescope supporters rallied Thursday in front of the state Capitol.

They held signs with messages like "Support Culture and Science" and "Move Forward Not Backward" and waved at passing cars. Some drivers honked in support.

Opponents of the telescope have gotten more attention than supporters as their protest has prevented crews from starting construction. The Hawaii Supreme Court last year ruled that the project had a valid permit, clearing the way for work to begin after a decadelong battle.

Protesters say building another telescope on a peak that already has 13 observatories will further desecrate the mountain on the Big Island.

But supporters also are impassioned about why they believe the telescope belongs on Mauna Kea, which has the best conditions for viewing the night sky in the Northern Hemisphere.

The telescope is expected to allow astronomers to peer back some 13 billion years in time to shortly after the Big Bang. It's expected to help astronomers determine whether life exists on planets outside the solar system and better understand fundamental concepts like gravity.

Chad Kalepa Baybayan, a Native Hawaiian expert in the traditional art of using the stars, weather and birds to navigate the seas, said astronomy advances human knowledge.

"I've heard the comment that the protesters want to be on the right side of history. I want to be on the right side of humanity. I want to be on the right side of enlightenment," Baybayan said.

He said people have to learn to share the mountain and there was more than enough space for everybody. Baybayan said he views the summit as a spiritual place but not a sacred one.

The economic benefits are substantial, particularly in a state heavily reliant on low-paying service industry jobs in the tourism business.

The Thirty Meter Telescope is projected to create 300 union construction jobs during its eight- to 10-year construction phase. It's expected to employ 140 employees when operational.

Hawaii will lose its status as a world leader in astronomy if the telescope isn't built, said Bob McLaren, the director of the University of Hawaii's Institute for Astronomy. Existing telescopes may not want to upgrade facilities and make further investments, and it could lead to a downward spiral for the field, he said.

Hawaii would lose employment in science, math, engineering and technology fields, forcing residents with such interests and careers to leave home for work, supporters say.

Having one of the most significant scientific facilities in the world is an incredible opportunity, McLaren said.

"People need to think really hard about exactly why they would want to pass that up. What is it that makes it worth passing that up?" McLaren said.

Storms and Kilauea's volcanic eruption made last year challenging for the Big Island, said Miles Yoshioka, executive director of the Hawaii Island Chamber of Commerce. He wants astronomy to diversify the island's economy.

"We're hoping it continues to be a big part of this island. We cannot rely on tourism alone," he said.

Retired Navy researcher Tom Strickland attended Thursday's rally in Honolulu.

"I'm a strong supporter of the advancement of science and technology. I think it brings a lot of good to humankind," Strickland said, holding a sign saying, "In Search of Knowledge" with a drawing of Mauna Kea.

About an equal number of people opposing the telescope stood on the other side of the street, waving upside down Hawaiian flags and signs saying, "Protect Mauna Kea." Drivers supporting the opponents honked, too.

Last weekend, 2,000 people joined the protest camp. Actor Dwayne "The Rock" Johnson visited the protesters this week to declare he stood with them.

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