tag:blogger.com,1999:blog-2819338062461909908.post7448067308785115841..comments2023-12-05T15:15:38.013+02:00Comments on Achieving Proficiency: Space related facts and thoughtsMichael Kapsalishttp://www.blogger.com/profile/13799776796087270186noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-2819338062461909908.post-72536103946247354242017-03-07T12:53:27.086+02:002017-03-07T12:53:27.086+02:00Great video Kostas! Keep researching the topic, th...Great video Kostas! Keep researching the topic, there's a lot more to be discovered!Christina Markoulakihttps://www.blogger.com/profile/06460428861771429571noreply@blogger.com