• http://www.skypub.com

• http://www.astronomy.com

• http://www.astronomynow.com

• http://www.astronomy.net

• http://www.nrao.edu/

(Radio Astronomy )

• http://www.noao.edu/

(Optical Astronomy)

• http://www.ast.cam.ac.uk/

• http://cadcwww.dao.nrc.ca/meetings/meetings.html

• http://www.astro.caltech.edu/

• http://www.ifa.hawaii.edu/

• http://antwrp.gsfc.nasa.gov/apod/astropix.html 

• http://www.michielb.nl/maya/astro.html

• http://msowww.anu.edu.au/library/thesaurus

• http://www.dustbunny.com/afk/

• http://www.ast.cam.ac.uk/IoA/