Planets, Endeavour at Dawn . ... Credit Copyright: Daniel Herron (Atlanta Astronomy Club) Explanation: When dawn broke over Kennedy Space Center on Monday, May 16, the space shuttle orbiter Endeavour still stood on pad 39A. Its final launch, on mission STS-134 to the International Space Station, was only hours away . ... The four planets continue to hug the eastern horizon at dawn throughout the month, while Endeavour is now scheduled to make its final approach to planet Earth on June 1. ...