Pioneer 6, 7, 8, and 9

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

Pioneer 6, 7, 8, and 9 were space probes in the Pioneer program, launched between 1965 and 1969. They were a series of solar-orbiting, spin-stabilized, solar cell- and battery-powered satellites designed to obtain measurements on a continuing basis of interplanetary phenomena from widely separated points in space.

Excerpt from the Wikipedia article “Pioneer 6, 7, 8, and 9”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Auteur inconnu, Public domain, via Wikimedia Commons.