Observación solar

http://astrosurf.com/obsolar

Observing the Sun in H-alpha

http://www.prairieastronomyclub.org/halpha.htm

Observing the Sun in Hydrogen-alpha and Calcium light

http://www.sungazer.net

Roteiro prático para o registro e a observação das manchas solares

http://solar.reabrasil.astrodatabase.net

Solar imaging

http://www.astro-nut.com/sun.html

Stanford Solar On-Line Activity Resources Center

http://solar-center.stanford.edu

De la planète rouge à l'origine de la vie

http://www.nirgal.net

Objectif Mars

http://www.mars.bw.qc.ca