Advanced Composition Explorer


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Advanced Composition Explorer

(ACE) A NASA satellite, launched in 1997 to measure the isotope and element abundances in the solar corona and cosmic rays over a wide range of energies. It is in orbit around L1, one of the Lagrangian points of the Sun–Earth system, 1.5 million km nearer to the Sun than Earth is.
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The Advanced Composition Explorer satellite is used in sensing the solar wind between the sun and the Earth.
Solar sentinels like Europe's Solar and Heliospheric Observatory and NASA's Advanced Composition Explorer have found a favorite spot at [L.
The Advanced Composition Explorer (ACE) should reach orbit by the time this magazine is published; it will measure cosmic rays coming from the Sun and from elsewhere in our galaxy and warn us about intense solar flares.

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