The Virtual Solar Observatory is a federated search system for solar physics data.  We primarily focus on remote sensing data (images from telescopes, coronographs, and magnetographs; spectra; maps), with solar wind and similar in situ data better discoverable through other heliospheric virtual observatories.

The VSO allows searching across multiple solar physics archives using a single API.  We provide access to data from both space and ground-based observatories, from academic and government institutions.