I am a member of the Société Française de Physique and of the Société Française d'Astronomie et d'Astrophysique.
Astrophysical news : Astro-ph.
Free Online Reviews :
Some reviews in physics : The Net Advance of Physics. Try also these links : here...
A very good freeware dedicated to the sky observation and understanding : STELLARIUM.
Mathematical and physical papers :