Mariner 7: heart-stopper at Mars

Mariner 7Just two days before its sister ship Mariner 6 makes its closest flyby of Mars, NASA/JPL’s unmanned space explorer Mariner 7 loses all contact with Earth. Ground controllers race to find a solution, re-establishing communications via Mariner 7’s low-gain antenna, which can only return data at a reduced speed and bandwidth. Its high-gain antenna resumes normal operation shortly after Mariner 6’s closest pass by Mars, allowing Mariner 7 to complete its mission as planned.

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