Second Stage Tank, Saturn V

Posted on Jan 2, 2012

People often take a few minutes looking at this image before figuring out what it shows. This is the top of the fuel tank in the second stage of the Saturn V moon rocket at Johnson Space Center in Houston. The tank held liquid hydrogen at -252 Celcius (-423 Farenheit) right above the liquid oxygen tank which was 70C (125F) warmer. Apparently, the biggest engineering challenge solved to build this was to develop insulation capable of keeping the contents suitably cold while being light enough to still allow the rocket to fly!

Prints of this image are available with widths between 36″ and 60″.

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