Astronomia
| Sky&Telescope | http://www.skyandtelescope.com/ |
| Science@NASA | http://science.nasa.gov/Astronomy.htm |
| Astronomy | http://www.astronomy.com/asy/default.aspx |
| Astronomy Now | http://www.astronomynow.com/ |
| UAI | http://www.uai.it/web/guest/home |
| International Meteor Organization | http://www.imo.net/ |
| ilMeteo | http://www.ilmeteo.it/ |
| CMIRL | http://www.meteoliguria.it/ |