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Collection:
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NASA Solarsystem Collection
Collection
NASA Solarsystem Collection
Collection
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title:
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Pioneer 4
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description:
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Pioneer 4 was a spin stabilized spacecraft launched on a lunar flyby trajectory and into a heliocentric orbit making it the first US probe to escape from the Earth's gravity.
It carried a payload similar to Pioneer 3: a lunar radiation environment experiment using a Geiger-Mueller tube detector and a lunar photography experiment. It passed within 60,000 km of the Moon's surface. However, Pioneer 4 did not come close enough to trigger the photoelectric sensor. No lunar radiation was detected. The spacecraft was still in solar orbit as of 1969.
*Image Credit*: NASA
description
Pioneer 4 was a spin stabilized spacecraft launched on a lunar flyby trajectory and into a heliocentric orbit making it the first US probe to escape from the Earth's gravity.
It carried a payload similar to Pioneer 3: a lunar radiation environment experiment using a Geiger-Mueller tube detector and a lunar photography experiment. It passed within 60,000 km of the Moon's surface. However, Pioneer 4 did not come close enough to trigger the photoelectric sensor. No lunar radiation was detected. The spacecraft was still in solar orbit as of 1969.
*Image Credit*: NASA
description
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date:
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03.03.1959
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keywords:
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Solar System Exploration
keywords
Solar System Exploration
keywords
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keywords:
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SSE
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keywords:
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Space
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keywords:
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NASA
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keywords:
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National Aeronautics and Space Administration
keywords
National Aeronautics and Space Administration
keywords
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keywords:
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JPL
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keywords:
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Jet Propulsion Laboratory
keywords
Jet Propulsion Laboratory
keywords
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keywords:
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Planets
keywords
Planets
keywords
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_what:
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Moon
facet_what
Moon
facet_what
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facet_what:
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Pioneer 4
facet_what
Pioneer 4
facet_what
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facet_what:
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Pioneer 3
facet_what
Pioneer 3
facet_what
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facet_what:
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Pioneer
facet_what
Pioneer
facet_what
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facet_where:
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Jet Propulsion Laboratory
facet_where
Jet Propulsion Laboratory
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_when:
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1969
facet_when
1969
facet_when
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facet_when:
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03-03-1959
facet_when
03-03-1959
facet_when
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facet_when_year:
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1959
facet_when_year
1959
facet_when_year
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facet_when_year:
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1969
facet_when_year
1969
facet_when_year
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UID:
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SPD-SLRSY-1890
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original url:
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original_url
original url
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