• Here is a picture of Alexei Leonov on the first-ever spacewalk... http://starchild.gsfc.nasa.gov/images/starchild/space_level2/leonov_spacewalk_big.gif 3 comments 26/2/2013 space
• Why is space black? http://starchild.gsfc.nasa.gov/docs/starchild/questions/question52.html 13 comments 21/3/2009 science