SOHO (SOlar Heliospheric Observatory) is a space-based observatory, viewing and investigating the Sun from its deep core, through its outer atmosphere - the corona - and the domain of the solar wind, out to a distance ten times beyond the Earth's orbit.
SOHO was designed to answer the following three fundamental scientific questions about the Sun:
SOHO Data Archive including all measurements from all onboard instruments.
SOHO - LASCO (Large Angle and Spectrometric Coronagraph Experiment) Cme Catalog. Its generated and maintained at the CDAW Data Center by NASA and The Catholic University of America in cooperation with the Naval Research Laboratory.
CDAWEB - Java-based interface-archive for ACE, CRRES, Cluster, DMSP, Equator-S, FAST, Genesis, Geotail, IMAGE, IMP, Interball, OMNI , Pioneer, Polar, SAMPEX, SNOE, SOHO, THEMIS, TIMED, Ulysses, Voyager, Wind and other spacecraft missions.
IAS Data Center is a solar archive allowing searches on the data from the SOHO mission, the TRACE satellite and the CORONAS/SPIRIT instrument.