Photos: Atlas 5 rocket on the pad with WorldView 4 satellite

United Launch Alliance will salvage the main engines through a mid-air recovery plan and reuse them again aboard the company’s new Vulcan rocket, saving 90 percent in booster propulsion costs, the company announced Monday.

The launch of the next Landsat land imaging mission — a joint project between NASA and the U.S. Geological Survey — has been delayed until around September 2021 after the effects of the coronavirus pandemic slowed work on the spacecraft in Arizona, NASA officials said.

Signaling strength in the international cooperation between the U.S. military and allied nations, a satellite funded by five countries will be launched by the Air Force on Saturday to codify a global communications deal.