Science Daily Magazine is an “on-line newspaper” with introductory information written by respected journalists. The newspaper also has pictures and videos.
USA.Gov for Science leads to authoritative science and applied science information compiled by U.S. Government agencies. Some of the sources require purchase.
Pathway or guide to huge number of scholarly and professional society web pages in physics with information ranging from the latest research to career preparation and opportunities.
Scholarly, full text, open access or free database of articles in physics and additional sciences sponsored by Cornell University with voluntary financial assistance from universities and independent laboratories.