Student Societies listing of physics and astronomy university, college and high-school societies.
Journals links to professional and popular journals.
Publishers links to physics and astronomy books and journals publishers.
Companies links to top high-technology companies that make products for physicists, astronomers, engineers and students.
'There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there. All great discoveries have involved such a leap. The important thing is not to stop questioning.'