Australia's leading observatories for radio astronomy are used by astronomers from around the world, 24 hours a day, every day, to learn about our Universe.

Australia Telescope Compact Array

The Australia Telescope Compact Array (ATCA), at the Paul Wild Observatory, is an array of six 22-m antennas used for radio astronomy. It is located about 25 km west of the town of Narrabri in rural NSW (about 500 km north-west of Sydney).

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