[/caption] Absolutely remarkable exterior panoramic photos of the ISS and tributes by Shuttle Astronauts marked two major milestones in spaceflight history today, May 27; the last spacewalk ever by Space Shuttle Astronauts and the formal completion of the US segment of the International Space Station after 12 years of construction. Today’s spacewalk by shuttle Endeavour … Continue reading "Amazing Photos and Milestone Tributes Mark Last Space Shuttle Spacewalk"