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RT @SpringerRef: On this day in 1972, astronauts of Apollo 17 have taken this iconic photo of planet Earth called 'Blue Marble'. Learn more…
RT @SpringerRef: On this day in 1972, astronauts of Apollo 17 have taken this iconic photo of planet Earth called 'Blue Marble'. Learn more…
RT @SpringerRef: On this day in 1972, astronauts of Apollo 17 have taken this iconic photo of planet Earth called 'Blue Marble'. Learn more…
On this day in 1972, astronauts of Apollo 17 have taken this iconic photo of planet Earth called 'Blue Marble'. Learn more about Astronaut Photography from our Handbook of Satellite Applications: https://t.co/oCNSPFEDyj. https://t.co/53RX6nolGR