Ενδιαφέρουσες συνδέσεις στο διαδύκτιο

 

http://helios.gsfc.nasa.gov/qa_mis.html

http://observe.ivv.nasa.gov/nasa/gallery/movie/movie_gallery.html

http://observe.ivv.nasa.gov/nasa/gallery/image_gallery/universe/universe.html

http://observe.ivv.nasa.gov/nasa/education/reference/orbits/orbit1.html

http://observe.ivv.nasa.gov/nasa/education/reference/orbits/orbit2.html

http://observe.ivv.nasa.gov/nasa/education/reference/orbits/orbit3.html


http://developers.ivv.nasa.gov/tech/javainquisitor/hits_pp.html


http://www.glenbrook.k12.il.us/gbssci/phys/mmedia/vectors/sat.html