Space launches

A lander is lifted during a test of hovering, obstacle avoidance and deceleration capabilities at a facility in Huailai in China's Hebei province, Thursday, Nov. 14, 2019. China has invited international observers to the test of its Mars lander as it pushes for inclusion in more global space projects. Thursday's test was conducted at a site outside Beijing simulating conditions on the Red Planet, where the pull of gravity is about one-third that of Earth. (AP Photo/Andy Wong)

Julie and Doc Todd watch the launch SpaceX from KARS Park in Florida, Monday, Nov. 11, 2019. SpaceX launched 60 mini satellites Monday, the second batch of an orbiting network meant to provide global internet coverage. (Malcolm Denemark/Florida Today via AP)

In this image made from a video provided by NASA the Starliner capsule rests on the ground after a test of Boeing's crew capsule's launch abort system in White Sands Missile Range in N.M., on Monday, Nov. 4, 2019. The capsule carried no astronauts Monday morning, just a test dummy. (NASA via AP)

Northrop Grumman's Antares rocket lift off the launch pad at NASA Wallops Flight facility in Wallops Island, Va., Saturday, Nov. 2, 2019. The rocket is carrying a Cygnus spacecraft carrying supplies to the International Space Station. (AP Photo/Steve Helber)

In this Oct. 27, 2019 photo released by the U.S. Air Force, the Air Force’s X-37B successfully lands at NASA’s Kennedy Space Center Shuttle Landing Facility on Merritt Island in Brevard County, Fla., following a record-breaking two-year mission. (U.S. Air Force via AP)

NASA Administrator Jim Bridenstine, left, talks with SpaceX chief engineer Elon Musk, right, in front of the Crew Dragon spacecraft, about the progress to fly astronauts to and from the International Space Station, from American soil, as part of the agency's commercial crew program at SpaceX headquarters, in Hawthorne, Calif., Thursday, Oct. 10, 2019. (AP Photo/Alex Gallardo)

FILE - In this Dec. 13, 2018 file photo, Virgin Galactic aircraftVSS Unity reaches space for the first time during its fourth powered flight from Mojave Air and Space Port, Calif. Boeing plans to invest $20 million in Virgin Galactic as the space tourism company nears its goal of launching passengers on suborbital flights. The companies announced the investment Tuesday, Oct. 8, 2019, saying they will work together on broadening commercial access to space and transforming global travel technologies. Virgin Galactic has conducted successful test flights of its winged rocket ship at Mojave, California, and is preparing to begin operations at Spaceport America in New Mexico. (AP Photo/Matt Hartman, File)

This photo provided by NASA astronaut Christina Koch shows the launch of a Russian Soyuz rocket, as seen from the International Space Station on Wednesday, Sept. 25, 2019. (Christina Koch/NASA via AP)

This photo provided by NASA shows a unmanned rocket carrying the Japan Aerospace Exploration Agency's supply vessel is launched off from Tanegashima Space Center in southern Japan on Tuesday, Sept. 24, 2019. The spacecraft is loaded with more than four tons of supplies, spare parts, and experiment hardware is headed to the International Space Station. (NASA via AP)