Goals:

•     What configuration of the corona leads to a Coronal Mass Ejection (CME)?
•     What initiates a CME?
•     What accelerates CMEs?
•     How does a CME interact with the heliosphere?
•     How do CMEs cause space weather disturbances?

The Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) will attempt to answer these questions. SECCHI is named after one of the first physicists (A. Pietro Secchi, 1818-1878) to use the new medium of photography to record solar eclipses. SECCHI will pioneer new techniques of synchronous interplanetary spacecraft operation and stereographic image reconstruction to develop a comprehensive three-dimensional description of the Sun and heliosphere to 1 AU.