Advanced Composition Explorer is a NASA Explorer program satellite and space exploration mission to study matter comprising energetic particles from the solar wind, the interplanetary medium, and othe
An artist's concept of ACE
ACE in orbit around the Sun–Earth L1 point.
ACE during assembly
CRIS
Heliophysics
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Heliophysics is the physics of the Sun and its connection with the Solar System. NASA defines heliophysics as " the comprehensive new term for the science of the Sun - Solar System Connection, the exp
This image presents various wavelengths of light produced by the Sun.