Freely available resources useful to those studying Physics and Astronomy:
- A Century of Physics - useful resource, including a Timeline of physics, published the American Physical Society (APS)
- Einstein Archives - online access to Albert Einstein’s scientific and non-scientific manuscripts held by the Albert Einstein Archives
- The Feynman Lectures on Physics Website - material, including exercises, to supplement the lecture series
- The Laws List - laws, rules, principles, effects, paradoxes, limits, constants and other related physics and astronomy topics
- MIT OpenCourseWare: Physics - freely available resources from the Massachusetts Institute of Technology
- Science Conferences - the US Department of Energy Office of Scientific and Technical Information's (OSTI) Science Conference Proceedings Portal
- Zooniverse - "home to the internet's largest, most popular and most successful citizen science projects"