Clyde Tombaugh
A memorial to the late astronomer clyde tombaugh, discoverer of the planet pluto
http://www.klx.com/clyde/index.html
HST
HST
http://hubblesite.org/newscenter/newsdesk/archive/releases/1996/09/
NSSDC Pluto
Nssdc photo gallery: pluto - a collection of images of the planet pluto
http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-pluto.html
Pluto
Pluto
http://www.urania.be/sterrenkunde/zonnestelsel/ijsdwergen.php
Pluto
De negen planeten, vertaling door guido hemeleers voor infoster vzw meise grimbergen
http://www.infoster.be/negepl/pluto.html