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| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
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ACE (Advanced Composition Explorer)
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ACE was placed in a halo orbit around the first Lagrangian point (L1) of the Earth-Sun system, about 1.4 million km from Earth. It carries six high-resolution sensors and three monitoring instruments for sampling low-energy particles of solar origin and high-energy galactic particles with a collecting power 10–1,000 times greater than previous experiments. The spacecraft can give advance warning, of about one hour, of geomagnetic storms that might overload power grids, disrupt communications, and pose a hazard to astronauts.
| Launch Date | Aug. 25, 1997 |
| Launch vehicle | Delta 7920 |
| Launch site | Cape Canaveral |
| Orbit | halo |
| Mass at launch | 785 kg |
Related category
• SATELLITES AND SPACE PROBES
External site
Advanced Composition Explorer homepage (Caltech)
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)