Mariner Ten utilised a gravity help maneuver about Venus to regulate its orbit throughout the Solar—this enabled it to generate more than one flyby of Mercury. Immediately after one orbit, Mercury has rotated 1.5 times, so right after two comprehensive orbits precisely the same hemisphere is all over again illuminated. https://apps.apple.com/de/app/merkur-spieleraum-online/id6477957809
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