Kees Floor, Zenit april 2012
Kees Floor, Zenit april 2012
 De originele 'blue marble'. Apollo 17, 7 december 1972. |
 Blue marble 1997. De maan is later toegevoegd. |
 Blue marble 2002. |
 Blue marble 2002. |
 VIIRS blue marble 2012. |
 VIIRS blue marble 2012. |