![Rocketmen who first conducted experiments](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circle-rocketmen.jpg) |
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The Rocketmen
Hear from one of the original 'rocketmen' as he describes the first experiments that led to the making of JPL.
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![Explorer 1 launch - video](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circles-explorer-launch.jpg) |
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Launch of Explorer 1
The launch of Explorer 1, Jan. 31, 1958.
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![America's first satellite - video](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circles-firstsatellites.jpg) |
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America's First Satellite
An overview of Explorer 1, the first U.S. satellite.
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![Jet Assisted takeoff video](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circle-JATO.jpg) |
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Jet-Assisted Takeoff
This footage compares takeoff of a rocket-equipped plane and
one without rockets.
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![WAC Corporal - video](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circle-WAC-corp.jpg) |
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WAC Corporal
This rocket was JPL’s first completely successful test of a guided missile
for the U.S. military.
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![Surveyor](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circle-surveyor.jpg) |
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Surveyors to the Moon
The Surveyor landers helped pave the way for the Apollo missions to the moon.
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![Mariner 4](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circle-mariner4.jpg) |
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Mariner 4
NASA’s first mission to Mars returned views of the red planet never before seen.
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![Mariner 9](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circle-mariner9.jpg) |
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Mariner 9 to Mars
The first spacecraft to orbit Mars, Mariner 9, transmitted more than 7,000 photographs.
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![image of moon from Ranger](https://webarchive.library.unt.edu/eot2008/20090119224553im_/http://www.jpl.nasa.gov/jplhistory/art/circle-ranger.jpg) |
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Ranger Impacts the Moon
The Rangers were designed to fly to the moon and intentionally collide with it, returning images of the surface and the approaching impact.
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