STS-135: The final space shuttle landing

Two U.S. Air Force cargo planes delivered the Mars 2020 rover, cruise stage, descent module and the Mars Helicopter to the Kennedy Space Center in Florida this week for final assembly, fueling and mounting atop a United Launch Alliance Atlas 5 rocket in preparation for liftoff in July.

The launch of SpaceX’s next 60 Starlink satellites will wait for better weather and sea conditions after currents were too strong for the company’s rocket landing platform to hold position in the Atlantic Ocean for a launch attempt Thursday.

NASA astronauts Bob Behnken and Doug Hurley will be geared up for the long haul when they launch from the Kennedy Space Center on a SpaceX Crew Dragon spacecraft later this month, but they won’t know exactly how long they will be in orbit until they are already aboard the International Space Station.