This 2015 artist's rendering provided by Northrop Grumman via NASA shows the James Webb Space Telescope. On Wednesday, June 27, 2018, NASA announced that the next-generation telescope will now fly no earlier than 2021 and the its lifetime cost is now expected to reach nearly $10 billion. (Northrop Grumman/NASA via AP)

More delay, cost for NASA's next-generation space telescope

June 27, 2018 - 1:07 pm

CAPE CANAVERAL, Fla. (AP) — NASA has delayed the launch of its next-generation space telescope — again.

NASA announced Wednesday that the James Webb Space Telescope will now fly no earlier than 2021. The delay means the observatory's overall cost is now expected to reach nearly $10 billion.

Officials blame worker error for at least part of the escalating costs and delays, dating back a decade. Despite the latest trouble, an independent review board urges that the project continue.

Just last month, NASA said fasteners came off the telescope during a vibration test conducted by its primary contractor, Northrop Grumman.

NASA considers Webb its highest science priority and a successor to the Hubble Space Telescope, orbiting since 1990.

In March, NASA announced that it was delaying launch until 2020.

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