Finding:

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   Explorer 33

   Explorer 33 (IMP-D) was a spacecraft launched by NASA on July 1, 1966 on a mission of scientific exploration. ... Mapping of the earth's bow shock and magnetic tail by Explorer 33
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   Cosmic Background Explorer (COBE)

   The DMR was able to spend four years mapping the anisotropy of cosmic background radiation as it was the only instrument not dependent on the dewar’s supply of helium to keep it cooled. ... On June 30, 2001, NASA launched a follow-up mission to COBE led by DMR Deputy Principal Investigator Charles L. Bennett.
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   Cosmic Background Explorer

   The DMR was able to spend four years mapping the detectable anisotropy of cosmic background radiation as it was the only instrument not dependent on the dewar’s supply of helium to keep it cooled. ... On June 30, 2001, NASA launched a follow-up mission to COBE led by DMR Deputy Principal Investigator Charles L. Bennett.
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   Hubble Space Telescope

   An orbiting solar telescope was launched in 1962 by the United Kingdom as part of the Ariel space program, and in 1966 National Aeronautics and Space Administration (NASA) launched the first Orbiting Astronomical Observatory (OAO) mission. ... Constellation-X Observatory · Dark Energy Space Telescope · Terrestrial Planet Finder · Wide-field Infrared Survey Explorer
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   Magellan probe

   The Magellan spacecraft was a space probe sent to the planet Venus, the first unmanned spacecraft to be launched by NASA since its successful Voyager 1 spacecraft to Jupiter and Saturn in 1977. ... It was named after the sixteenth-century Portuguese explorer Ferdinand Magellan.
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   Mars

   Following the 1992 failure of the Mars Observer orbiter, NASA launched the Mars Global Surveyor in 1996. ... Also influential were Ray Bradbury's The Martian Chronicles, in which human explorers accidentally destroy a Martian civilization, Edgar Rice Burroughs' Barsoom series and a number of Robert A. Heinlein stories before the mid-sixties.
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   Explorer 1

   On February 1, 1958 at 03:48 UTC the Juno I rocket was launched putting Explorer 1 into orbit, which made Explorer 1 the first Earth satellite of the United States. ... NASA.
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   NASA

   From 2002, NASA’s mission statement, used in budget and planning documents, read: “To understand and protect our home planet; to explore the universe and search for life; to inspire the next generation of explorers ... as only NASA can.” ... NASA remains the only space agency to have launched space missions to the outer solar system beyond the asteroid belt.
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   Great Observatories program

   In the meantime, in 1978, NASA launched the first imaging X-ray telescope, Einstein (HEAO-2), into orbit. ... Constellation-X Observatory · Dark Energy Space Telescope · Terrestrial Planet Finder · Wide-field Infrared Survey Explorer
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    Explorer program

    Over the years, NASA has launched a series of "Explorer" spacecraft carrying a wide variety of scientific investigations.

Explore the following pages on Powerset:

• Explorer 33,
• Cosmic Background Explorer (COBE),
• Cosmic Background Explorer,
• Hubble Space Telescope,
• Magellan probe,
• Mars,
• Explorer 1,
• NASA,
• Great Observatories program,
• Explorer program