Jan 27 1974
From The Space Library
Hills 1000 m high on the planet Mercury, as well as valleys 700 m deep and craterlike surface features 50 km across, had been found by Jet Propulsion Laboratory radar astronomers during high-resolution scans, NASA announced. The features were charted by directing high-powered beams at Mercury in 14 probes between 15 July and 8 Dec. 1972 from Goldstone Deep Space Station's 64-m dish antenna. Months of computer work had analyzed the data and formulated a map of radar findings, which might be verified 29 March when Mariner 10 (launched 3 Nov. 1973) was scheduled to fly past and take the first closeup photos of Mercury. (NASA Release 74-12)
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