NASA astronaut and Maryland native Ricky Arnold signs a baseball for a young fan before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold is seen on field before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold is interviewed by Paul Mancano of MASN All Access before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold takes a picture with a young fan before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold talks with Baltimore Orioles shortstop Richie Martin before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold signs an autograph before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold presents a montage of images from his mission and a Baltimore Orioles hat that was flown aboard the International Space Station to Baltimore Orioles manager Brandon Hyde before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold is interviewed by Paul Mancano of MASN All Access before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold talks with Baltimore Orioles manager Brandon Hyde after presenting a montage of images from his mission and a Baltimore Orioles hat that was flown aboard the International Space Station before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)

NASA astronaut and Maryland native Ricky Arnold is interviewed by Paul Mancano of MASN All Access before the Tampa Bay Rays take on the Baltimore Orioles, Saturday, May 4, 2019 at Camden Yards in Baltimore, Md. During Arnold’s 197 days onboard the International Space Station, as part of Expeditions 55 and 56, he ventured outside the space station on three spacewalks in addition to conducting numerous experiments and educational downlink events. Photo Credit: (NASA/Joel Kowsky)