Apollo 11 launch as broadcast live by NASA on July 16, 1969

Russian officials have delayed until Saturday the launch of a Proton rocket from Kazakhstan with the Spektr-RG X-ray astronomy observatory, an ambitious mission jointly developed with Germany to probe dark energy.

The second fully commercial astronaut flight to the International Space Station will have just two opportunities to launch Sunday and Monday, or else wait until after an upcoming SpaceX resupply mission next month to deliver a new set of high-priority solar arrays to the complex.

China’s space agency released the first pictures from the Zhurong Mars rover rover Wednesday, showing the six-wheel robot ready to drive down a ramp from its landing platform to begin exploring the Red Planet.