Friday, June 28, 2019: NASA s mobile launcher arrives at NASA s Launch Complex 39B at the Kennedy Space Center in Florida for final tests in preparation for its launch of the Space Launch System (SLS) megarocket and Orion spacecraft. The mobile launcher will be used for the launch of Artemis 1, the first planned mission of NASA s new moon exploration program. It arrived at the pad on June 27 and will remain there for the rest of the summer as NASA gears up for the historic uncrewed test flight around the moon. — Hanneke Weitering
In this photo, a scientist at the European Space Agency's Materials and Electrical Components Laboratory at the ESTEC technical center in the Netherlands works on essential mission work.