2026
CLM-FIRST-PLANETARY-FLYBY= 1962CONSTRUCTIONMission record from NASA/JPL.Evidence quality: PAPER · Source: NASA — Mariner 2 — First successful flyby of another planet ↗
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Limits RegistryNASA's Mariner 2 flew past Venus on 14 December 1962 at about 34,800 km, becoming the first spacecraft to successfully encounter another planet. Its microwave radiometer showed that Venus's surface is extremely hot, overturning hopes of a temperate world beneath the clouds.
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NASA's Mariner 2 flew past Venus on 14 December 1962 at about 34,800 km, becoming the first spacecraft to successfully encounter another planet. Its microwave radiometer showed that Venus's surface is extremely hot, overturning hopes of a temperate world beneath the clouds.
The year a spacecraft first returned data from a close flyby of another planet.
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Limits Registry. LR-FIRST-PLANETARY-FLYBY. First successful flyby of another planet. 2026.