The Sheridan Libraries Physics and Astronomy LibGuide has a comprehensive list of physics and astronomy data sources.

Awesome Datasets list of open-access energy datasets.

Repository for publication-related High-Energy Physics data. Includes data from the Large Hadron Collider including the detectors ATLAS, ALICE, CMS, and the LHCb subdetectors.

A comprehensive dataset of quantum-mechanical properties spanning the chemical space of small organic molecules

The SAO/NASA Astrophysics Data System (ADS) is a digital library portal for researchers in astronomy and physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant.

The Sloan Digital Sky Survey has created the most detailed three-dimensional maps of the Universe ever made, with deep multi-color images of one third of the sky, and spectra for more than three million astronomical objects. The latest data release includes optical spectra from the SDSS component extended Baryon Oscillation Spectroscopic Survey (eBOSS), infrared spectra of the SDSS component Apache Point Observatory Galaxy Evolution Experiment 2 (APOGEE-2), data cubes from integral field unit (IFU) spectroscopic observations of nearby galaxies from the SDSS component Mapping Nearby Galaxies at APO (MaNGA), as well as the first data products and maps from the MaNGA Data Analysis Pipeline (DAP)