Pioneer Venus

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Two NASA space probes to Venus. Pioneer Venus 1 (also known as Pioneer Venus orbiter) went into orbit around Venus, photographing the planet's clouds and mapping its surface by radar. Pioneer Venus 2 (also known as the multiprobe) ejected four sub-probes that analysed the planet's clouds and atmosphere during their descent. One of the sub-probes survived its impact with Venus, continuing to transmit from the surface for over an hour.

Pioneer Venus Probes


Launch date


Pioneer Venus 1

1978 May 20

Entered orbit around Venus 1978 December 4

Pioneer Venus 2

1978 August 8

Ejected four smaller probes which entered the atmosphere of Venus 1978 December 9

Subjects: Astronomy and Astrophysics.

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