A reaction database of numerical high-energy physics (HEP) scattering cross sections, including total and differential cross sections, structure functions, fragmentation functions, distributions of jet measures, polarizations, etc... from a wide range of interactions. See information on submitting data.
Barbara A. Mikulski Archive for Space Telescopes (MAST) provides a variety of astronomical data archives, with a primary focus on scientifically related data sets in the optical, ultraviolet, and near-infrared parts of the spectrum. MAST accepts data from missions and high-level science products. See information on contributing data.