http://th.wikipedia.org/wiki/%E0%B8%94%E0%B8%B2%E0%B8%A7%E0

%B9%80%E0%B8%97%E0%B8%B5%E0%B8%A2%E0%B8%A1

http://www.baanjomyut.com/library/satellite/index.html

http://www.electron.rmutphysics.com/science-news/index.php?option=com_content&task=view&id=1487&Itemid=4

http://www.instrument.tmd.go.th/?p=608

http://eu.wikipedia.org/wiki/Fitxategi:Milstar.jpg

http://www.pasakrid.com/?name=news&file=readnews&id=78

http://www.rmutphysics.com/charud/oldnews/201/sattlelite/1.htm

http://chutamas.wordpress.com/2012/03/27/

%E0%B8%94%E0%B8%B2%E0%B8%A7%E0%B9%80%E0%B8%97%E0%B8%B5%E0%B8%A2%E0%B8%A1-satellit/

http://www.pacdv.com/sounds/transportation_sound