Here I am. Again. @ISS lunar transit. Great shot, @ingallsimages! #YearInSpace #spacestation #moon #space #nasa A photo posted by Scott Kelly (@stationcdrkelly) on Aug 2, 2015 at 1:56pm PDT Poor moon. Covered in garbage and shrinking in size, all thanks to Earth. Scientists noticed cracks in the lunar crust years ago, but it wasn't until recently that they figured out what was going on.