ACE
ACE is a NASA particle observatory near the Sun-Earth L1 point that measures solar-wind ions, solar energetic particles, and cosmic rays from interplanetary, interstellar, and galactic sources. Its upstream position also provides advance measurements of solar-wind conditions approaching Earth.
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Identity
- Aliases
- Advanced Composition Explorer
- Name
- ACE
- Status
- active
Details
- Astronauts
- -
- Description
- ACE is a NASA particle observatory near the Sun-Earth L1 point that measures solar-wind ions, solar energetic particles, and cosmic rays from interplanetary, interstellar, and galactic sources. Its upstream position also provides advance measurements of solar-wind conditions approaching Earth.
- Destination
- Sun–Earth L1 Lagrange Point for measuring solar-wind ions, solar energetic particles, and cosmic rays from interplanetary, interstellar, and galactic sources, supporting Sun–Earth interaction studies and advance warning of geomagnetic storms
- Launch Site
- Outcome
- ACE remains active far beyond its original five-year goal, sustaining long-baseline composition studies and near-real-time space-weather observations that can warn of geomagnetic disturbances before they reach Earth.
- Programs
- Start Date
- 1997-08-25
- Vehicle Families
Links
- Official Url
- https://science.nasa.gov/mission/ace/
Assets & Meta
- Creation Time
- July 18, 2026 at 13:49:48 UTC
- Updated Time
- August 23, 2026 at 02:22:31 UTC
- Image
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Other
- Affiliations
- Search Name
- ACE Advanced Composition Explorer
- Space Stations
- -
- Vehicles