http://cosmicbeat.eu/stmarina/ - Saint Marina Observatory

http://www.planetarium-gb.eu - Astronomical Observatory and Planetarium – Gabrovo

http://www.telescope.bg - Astronomical Association Sofia

http://www.phys.uni-sofia.bg/~astro - Department of Astronomy, University of Sofia "St. Kliment Ohridski"

http://www.astro.bas.bg - Institute of Astronomy

http://www.nao-rozhen.org/index_bg.htm- National Astronomical Observatory "Rozhen"

http://forum.starrydreams.com/ - Astronomical forum

http://astrocalendar.50webs.com/index.html - Astronomical calendar

http://www.astronomy.hit.bg –Bulgarian Astronomical portal

http://astro-olymp.org - National Astronomical olympiad

http://astro-varna.com - NAOP Varna.

http://www.skyandtelescope.com - Списание „Sky and Telescope”

http://www.eso.org/public/ - ESO

http://www.nasa.gov/ - NASA

http://hubblesite.org/ - Hubble Space Telescope

http://www.worldwidetelescope.org/ - World Wide Telescope

http://earth.google.com/ - Google Earth

http://cirrus.meteo.noa.gr/forecast/bolam/index.htm - Weather forecast Europe

http://met.hit.bg/sat/sat.htm - Meteo satellite