Just one of the vital items ATV-4 is lofting into space

Nice photo of the water pump unit going into the Columbus lab!

#ATV4 does not bring only tiramisu&fuel for @astro_luca, 1 vital spare pump for #Columbus among 4.35t of supply pic.twitter.com/nEftprLNc8

— lionelferra (@lionelferra) June 5, 2013