Kelereng Biru

Kelereng Biru (bahasa Inggris: The Blue Marble) adalah sebuah foto Bumi terkenal, yang diambil pada 7 Desember 1972, oleh kru pesawat ruang angkasa Apollo 17, dengan jarak sekitar 45.000 kilometer (28.000 mil). Foto tersebut menjadi salah satu foto paling ikonik, dan menjadi salah satu gambar paling didistribusikan dalam sejarah manusia.^[1][2]

Wikimedia Commons memiliki media mengenai The Blue Marble.

• NASA history Diarsipkan 2008-09-16 di Wayback Machine. of Blue Marble image releases

• The one, the only, photograph of Earth a short list of places in which the image has been used.
• Apollo Image Atlas Photos from magazine NN of the 70 mm Hasselblad camera used on Apollo 17 (includes the Blue Marble photo and others quite similar to it)

• Blue Marble Diarsipkan 2009-06-26 di Wayback Machine. (2002)
  • Blue Marble Mapserver Diarsipkan 2005-02-10 di Wayback Machine. Web interface for viewing small sections of the above
• Blue Marble: Next Generation Diarsipkan 2008-10-17 di Wayback Machine. (2005; one picture per month)
  • Blue Marble Navigator Web interface for viewing local sections of the above, incl. links to other such interfaces, download sites etc.
  • Blue Marble: Next Generation in NASA World Wind Diarsipkan 2005-10-28 di Wayback Machine.
• Wired: New Satellite Takes Spectacular High-Res Image of Earth with link to 2012 Composite in Super High Resolution.
• "Earth at Night 2012: It’s the end of the night as you know it; you’ll see fine." dari Michael Carlowicz pada 5 Desember 2012 NASA Earth Observatory site with various links around the 2012 Black Marble images