Officials with the Square Kilometre Array (SKA), which will be the world’s biggest radio telescope, say they have nearly finalized designs and are planning for construction to begin in Australia and South Africa. This week, at a final engineering meeting in Shanghai, China, designs were presented for the array’s dishes and antennas, which a committee will review in the coming weeks—setting the stage for construction to begin.
“I’m feeling confident,” of starting construction in early 2021, says Philip Diamond, SKA director general at the organization’s headquarters near Manchester, U.K. The design review committee is expected to make suggestions, “but we’re not expecting any show-stoppers,” he says.
The SKA, funded by 13 nations from around the world, will eventually consist of thousands of dishes scattered across southern Africa and a million sticklike antennas in Western Australia. Daunting early cost estimates convinced planners to start with a more limited array that is expected to cost €1.7 billion for construction and 10 years of operation. In this first phase, the SKA group will deploy 130,000 antennas in Australia and add 133 dishes to the 64 of the MeerKAT array, an SKA precursor instrument in South Africa that opened last year.