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ACE’s Place in Space

ACE's Place in Space
NASA's Advanced Composition Explorer (ACE) orbits a point between Earth and the sun called a Lagrange point, labeled here as L1. Sitting well outside of Earth's magnetosphere, ACE can observe material streaming off the sun before it enters near-Earth space.

NASA’s Advanced Composition Explorer (ACE) orbits a point between Earth and the sun called a Lagrange point, labeled here as L1. Sitting well outside of Earth’s magnetosphere, ACE can observe material streaming off the sun before it enters near-Earth space. Credit: NASA/H. Zell› Link to associated news item