The Advanced Composition Explorer (ACE) spacecraft was designed to study spaceborne energetic particles from the L1 Libration Point, about 1.4 million kilometers from Earth. Specifically, the spacecraft was launched to investigate the matter ejected from the Sun to establish the commonality and interaction among the Sun, Earth, and the Milky Way galaxy.
In addition, ACE also provides real-time space weather data and advanced warning of geomagnetic storms. ACE's nine instruments have a collecting power that is 10 to 10,000 times greater than anything previously flown. After launch, the spacecraft's Delta 2 launch vehicle's second stage reignited (for 4 hours) to insert the satellite into a 177 x 1.37-million-kilometer orbit.
After reaching apogee a month after launch, ACE inserted itself into its halo orbit around the L1 point. The spacecraft was declared operational on 21 January 1998 and has operated far beyond its expected lifetime.
Read More: http://www.cosmosportal.org/articles/view/140917/
In addition, ACE also provides real-time space weather data and advanced warning of geomagnetic storms. ACE's nine instruments have a collecting power that is 10 to 10,000 times greater than anything previously flown. After launch, the spacecraft's Delta 2 launch vehicle's second stage reignited (for 4 hours) to insert the satellite into a 177 x 1.37-million-kilometer orbit.
After reaching apogee a month after launch, ACE inserted itself into its halo orbit around the L1 point. The spacecraft was declared operational on 21 January 1998 and has operated far beyond its expected lifetime.
Read More: http://www.cosmosportal.org/articles/view/140917/
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