Space launches

In this photo made available from the twitter account of UAE Vice President and Prime Minister and ruler of Dubai, Emirati officials brief Sheikh Mohammed bin Rashid Al Maktoum about a possible moon mission, Tuesday, Sept. 29, 2020, in Dubai, United Arab Emirates. Sheikh Mohammed made the announcement Tuesday on Twitter that his country plans to send an unmanned spacecraft to the moon in 2024. (Sheikh Mohammed bin Rashid Al Maktoum Twitter account via AP)

FILE - In this July 23, 2020, file photo released by China's Xinhua News Agency, a Long March-5 rocket carrying the Tianwen-1 Mars probe lifts off from the Wenchang Space Launch Center in southern China's Hainan Province. China's Mars probe Tianwen-1, which blasted into space in July, is now more than 15 million kilometers (9 million miles) from Earth en route to the red planet, the National Space Administration said Saturday, Sept. 12, 2020. (Cai Yang/Xinhua via AP)

In this handout photo taken on Thursday, Aug. 6, 2020, and provided by Russian Direct Investment Fund, a new vaccine is on display at the Nikolai Gamaleya National Center of Epidemiology and Microbiology in Moscow, Russia. Russian President Vladimir Putin's announcement that his country is the first to approve a coronavirus vaccine hasn't provoked the awe and wonder of the Soviet Union’s launch of the first satellite into orbit in 1957. Instead the announcement was met by doubts about the science and safety of the vaccine. (Alexander Zemlianichenko Jr/ Russian Direct Investment Fund via AP)

NASA astronauts Robert Behnken, left, and Douglas Hurley are seen inside the SpaceX Crew Dragon Endeavour spacecraft onboard the SpaceX GO Navigator recovery ship shortly after having landed in the Gulf of Mexico off the coast of Pensacola, Fla., Sunday, Aug. 2, 2020. The Demo-2 test flight for NASA's Commercial Crew Program was the first to deliver astronauts to the International Space Station and return them safely to Earth onboard a commercially built and operated spacecraft. Behnken and Hurley returned after spending 64 days in space. (Bill Ingalls/NASA via AP)

In this image from video made available by NASA, astronauts Doug Hurley, left, and Bob Behnken prepare for undocking from the International Space Station, aboard the SpaceX Crew Dragon capsule on Saturday, Aug. 1, 2020. (NASA via AP)

A United Launch Alliance Atlas V rocket lifts off from pad 41 at the Cape Canaveral Air Force Station Thursday, July 30, 2020, in Cape Canaveral, Fla. The mission will send a Mars rover to the Red Planet to search for signs of life, explore the planet's geology and much more. (AP Photo/John Raoux)

A United Launch Alliance Atlas V rocket that will launch to Mars arrives at Space Launch Complex 41 at the Cape Canaveral Air Force Station, Tuesday, July 28, 2020, in Cape Canaveral, Fla. The rocket scheduled to launch on Thursday will land on Mars in February 2021 and the Mars 2020 rover, named Perseverance, will study Martian geology. (AP Photo/John Raoux)

FILE - In this May 6, 2020, file photo Chief of Space Operations at U.S. Space Force Gen. John Raymond testifies before the Senate Armed Services Committee hearing on Capitol Hill in Washington. The United States accused Russia on Thursday, July 23, of conducting a test of an anti-satellite weapon in space, asserting that it exposed Moscow's intent to deploy weapons that threaten U.S. and allied satellites. “The Russian satellite system used to conduct this on-orbit weapons test is the same satellite system that we raised concerns about earlier this year, when Russia maneuvered near a U.S. government satellite,” said Raymond. (Shawn Thew/Pool via AP, File)

In this photo released by China's Xinhua News Agency, a Long March-5 rocket carrying the Tianwen-1 Mars probe lifts off from the Wenchang Space Launch Center in southern China's Hainan Province, Thursday, July 23, 2020. China launched its most ambitious Mars mission yet on Thursday in a bold attempt to join the United States in successfully landing a spacecraft on the red planet. (Cai Yang/Xinhua via AP)