An astronaut figurine stands among the nativity scene display at the Vatican, December 15, 2020. REUTERS/Guglielmo Mangiapane

An astronaut figurine stands among the nativity scene display at the Vatican, December 15, 2020. REUTERS/Guglielmo Mangiapane

An astronaut figurine stands among the nativity scene display at the Vatican, December 15, 2020. REUTERS/Guglielmo Mangiapane

An astronaut figurine stands among the nativity scene display before the lightning of the Vatican Christmas tree during a ceremony at St Peter's Square, with protocols in place due to COVID-19, at the Vatican, December 11, 2020. Picture taken December 11, 2020. REUTERS/Guglielmo Mangiapane

An astronaut figurine stands among the nativity scene display before the lightning of the Vatican Christmas tree during a ceremony at St Peter's Square, with protocols in place due to COVID-19, at the Vatican, December 11, 2020. Picture taken December 11, 2020. REUTERS/Guglielmo Mangiapane

U.S. Senator-elect Mark Kelly (D-AZ), his wife Gabby Giffords, former U.S. Representative from Arizona, his children Claudia Kelly and Claire Kelly and his brother Scott Kelly speak with Vice President Mike Pence after a swearing-in ceremony, in Washington D.C., U.S. December 2, 2020. Nicholas Kamm/Pool via REUTERS

Vice President Mike Pence, U.S. Senator-elect Mark Kelly (D-AZ) and his wife Gabby Giffords, former U.S. Representative from Arizona, his children Claudia Kelly and Claire Kelly, and his brother Scott Kelly pose for a photo after a swearing-in ceremony, in Washington D.C., U.S. December 2, 2020. Graeme Jennings/Pool via REUTERS

U.S. Senator-elect Mark Kelly (D-AZ) and his wife Gabby Giffords, former U.S. Representative from Arizona, his children Claudia Kelly and Claire Kelly, and his brother Scott Kelly speak after his swearing-in ceremony by Vice President Mike Pence, in Washington D.C., U.S. December 2, 2020. Graeme Jennings/Pool via REUTERS

Former astronaut Mark Kelly and his wife Gabby Giffords, former U.S. Representative from Arizona, speak before a swearing-in ceremony by Vice President Mike Pence as Democratic U.S. senator for Arizona, in Washington D.C., U.S. December 2, 2020. Nicholas Kamm/Pool via REUTERS

U.S. Senator-elect Mark Kelly (D-AZ) and his wife Gabby Giffords, former U.S. Representative from Arizona, react after his swearing-in ceremony by Vice President Mike Pence, in Washington D.C., U.S. December 2, 2020. Nicholas Kamm/Pool via REUTERS

U.S. Senator-elect Mark Kelly (D-AZ) and his wife Gabby Giffords, former U.S. Representative from Arizona, speak after his swearing-in ceremony by Vice President Mike Pence, in Washington D.C., U.S. December 2, 2020. Nicholas Kamm/Pool via REUTERS

Former astronaut Mark Kelly is sworn in by Vice President Mike Pence as Democratic U.S. senator for Arizona as his wife Gabby Giffords, former U.S. Representative from Arizona, looks on in Washington D.C., U.S. December 2, 2020. Graeme Jennings/Pool via REUTERS

Former astronaut Mark Kelly is sworn in by Vice President Mike Pence as Democratic U.S. senator for Arizona as his wife Gabby Giffords, former U.S. Representative from Arizona, looks on in Washington D.C., U.S. December 2, 2020. Graeme Jennings/Pool via REUTERS

Former astronaut Mark Kelly is sworn in by Vice President Mike Pence as Democratic U.S. senator for Arizona as his wife Gabby Giffords, former U.S. Representative from Arizona, looks on in Washington D.C., U.S. December 2, 2020. Graeme Jennings/Pool via REUTERS

Former astronaut Mark Kelly is sworn in by Vice President Mike Pence as Democratic U.S. senator for Arizona as his wife Gabby Giffords, former U.S. Representative from Arizona, looks on in Washington D.C., U.S. December 2, 2020. Graeme Jennings/Pool via REUTERS

Former astronaut Mark Kelly is sworn in by Vice President Mike Pence as Democratic U.S. senator for Arizona as his wife Gabby Giffords, former U.S. Representative from Arizona, looks on in Washington D.C., U.S. December 2, 2020. Graeme Jennings/Pool via REUTERS

U.S. Senator-elect Mark Kelly (D-AZ) and his wife Gabby Giffords, former U.S. Representative from Arizona, react after his swearing-in ceremony by Vice President Mike Pence, in Washington D.C., U.S. December 2, 2020. Nicholas Kamm/Pool via REUTERS

Former astronaut Mark Kelly is sworn in by Vice President Mike Pence as Democratic U.S. senator for Arizona as his wife Gabby Giffords, former U.S. Representative from Arizona looks on in Washington D.C., U.S. December 2, 2020. Nicholas Kamm/Pool via REUTERS

Former astronaut Mark Kelly attends his swearing-in ceremony as Democratic U.S. senator for Arizona as his wife Gabby Giffords, former U.S. Representative from Arizona, listens in Washington D.C., U.S. December 2, 2020. Nicholas Kamm/Pool via REUTERS

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. Picture taken November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. Picture taken November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. Picture taken November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. Picture taken November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. Picture taken November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur TPX IMAGES OF THE DAY

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

People watch as a SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper TPX IMAGES OF THE DAY

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

A SpaceX Falcon 9 rocket, with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S., November 15, 2020. REUTERS/Steve Nesius

A SpaceX Falcon 9 rocket, with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S., November 15, 2020. REUTERS/Steve Nesius

A SpaceX Falcon 9 rocket, topped with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S., November 15, 2020. REUTERS/Steve Nesius

A SpaceX Falcon 9 rocket, with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

A SpaceX Falcon 9 rocket, with the Crew Dragon capsule, is launched carrying four astronauts on the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Thom Baur

NASA astronaut Michael Hopkins, spacecraft commander, gestures as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi gestures as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi gestures as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi reaches to a relative as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi gestures as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi gestures as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

Japan Aerospace Exploration Agency (JAXA) astronaut Soichi Noguchi reaches to a relative as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper

NASA astronaut Michael Hopkins, spacecraft commander, gestures as the crew of a SpaceX Falcon 9 rocket departs for the launch pad for the first operational NASA commercial crew mission at Kennedy Space Center in Cape Canaveral, Florida, U.S. November 15, 2020. REUTERS/Joe Skipper