Video: Press conference following Falcon launch and landing

The launch of SpaceX’s next resupply run to the International Space Station has been rescheduled for April 13, officials said Tuesday.

Two U.S.-German satellites launched more than 15 years ago to measure Earth’s changing gravity field will stop collecting data in November, a few months before a pair of replacement craft will launch to resume gravity measurements, NASA officials said.

An airport-like viewing tower standing up to 30 stories tall is the centerpiece of SpaceX’s planned rocket refurbishment and operations base proposed for vacant land at NASA’s Kennedy Space Center in Florida.