What Did Mariner 10 See During Its Historic Journey To Venus and Mercury? (4K UHD)

Mariner 10 was the first spacecraft sent to the planet Mercury; the first mission to explore two planets during a single mission; the first to use a gravity assist to change its flight path; the first to return to its target after an initial encounter; and the first to use the solar wind as a major means of spacecraft orientation during flight. But what did it capture with its two onboard cameras?

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Astral (Tension) by Craig Conard (www.craigconard.com)
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