At this time within the historical past of astronomy, the primary interplanetary mission reveals our inhospitable sister planet.
Although its twin probe, Mariner 1, was destroyed shortly after launch, Mariner 2 (seen on this artist’s depiction) made it efficiently to Venus. Credit score: NASA/JPL
- Mariner 1 and a pair of, twin spacecraft developed from the Ranger lunar probe and geared up with seven devices, had been designed for a joint mission to Venus; nevertheless, Mariner 1 failed minutes after its July 22, 1962 launch because of a rocket malfunction.
- Mariner 2 efficiently launched on August 27, 1962, and through its 110-day, 293-million-kilometer journey to Venus, it confirmed the existence of the photo voltaic wind.
- On December 14, 1962, Mariner 2 executed the primary profitable interplanetary mission, performing a 42-minute flyby of Venus at roughly 34,000 kilometers.
- Scientific information from Mariner 2 indicated Venus possesses a particularly sizzling floor with a chilly ambiance, a dense and extremely pressurized ambiance, and an absence of a magnetic area, collectively characterizing an inhospitable surroundings.
Developed collectively, the dual Mariner 1 and a pair of spacecraft had been based mostly on the Ranger lunar probe and deliberate for a joint mission to our closest neighboring planet. The probes featured seven devices for learning Venus’ ambiance, temperature, and magnetic area. On July 22, 1962, Mariner 1 launched, however the spacecraft was destroyed solely minutes into its first flight when its rocket went off track. Mariner 2’s launch on Aug. 27 was profitable, although, and it set off for Venus. (En route, it confirmed the existence of the photo voltaic wind proposed by Eugene Parker in 1958.)
Lastly, after a journey of 110 days and 182 million miles (293 million kilometers), the craft arrived at Venus. On Dec. 14, 1962, it executed the primary profitable interplanetary mission, flying by at about 21,000 miles (34,000 km) and scanning the planet for 42 minutes. Amongst different information, Mariner 2 confirmed that Venus was extraordinarily sizzling, with the warmth coming from its floor, although its ambiance remained chilly. Mariner 2 additionally revealed that the venusian ambiance was very dense and pressurized far past Earth’s. These circumstances, in addition to the dearth of a magnetic area, confirmed that Venus was inhospitable.
