Sources of space physics observations

Feel free to add more!

Generic observations web pages

Solar geophysical data web pages can be found here. Unfortunately, their interface uses on acroread plugin, which might be a bit inconvenient, so you might want to go straight for the pdf files.
CDAWEB holds a large amount of observations from various past and present space physics missions.
SOHO Web pages have obviously data from (or links to pages on data from) SOHO instruments, but they keep also some synoptic data (or links to synoptic data) from other ground and space-borne instruments.

SOHO LASCO CME CATALOG is not really just LASCO observations, they combine also SOHO/EIT, GOES X-ray and WIND/WAVES observation in their data.
WIND WAVES Radio observations, day files.
SOHO Costep/Ephin Online Level-2 Data Browser, plots also WIND, LASCO, GOES event times