Resources that are freely accessible to researchers from anywhere in the world. No library affiliation or subscriptions are required to access the full text.
The Astrophysics Data System maintains three bibliographic collections containing more than 15 million records covering publications in astronomy and astrophysics, physics, and general science, including all arXiv e-prints.
A free, full-text collection of conference proceedings in the areas of Astronomy, Biophysics, Mathematics, Neuroscience, Physics and Science Communication.
Contains information for about 2,750,000 astronomical objects (stars, galaxies, planetary nebulae, clusters, novae and supernovae, etc.). The only astronomical objects specifically excluded from SIMBAD are Solar System bodies (planets, satellites, asteroids, comets). Provides basic data, cross-identifications and bibliography, but no full text articles.
= Websites where everything in the site is free, full-text.
