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Antennas of the Canberra DSN at work Radio antennas in Australia track the twin GRAIL spacecraft on the way to the Moon. In the center is the 34-meter DSS-34 tracking GRAIL-A and at right is DSS-45 on GRAIL-B. In the left background, 70-meter DSS-43 is tracking STEREO-B. Canberra DSN