Johann-Dietrich Woerner, Director General of ESA (European Space Agency), speaks during the Heads of Agency Plenary of the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)

Johann-Dietrich Woerner, Director General of the ESA (European Space Agency), during the Heads of Agency press conference at the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Bill Ingalls)

S. Somanath, Director of Vikram Sarabhai Space Centre, Indian Space Research Organization (ISRO), left, NASA Administrator Jim Bridenstine, Hiroshi Yamakawa, President of the Japan Aerospace Exploration Agency (JAXA), Sergey Krikalev, Executive Director for Piloted Spaceflights for Roscosmos, and Johann-Dietrich Woerner, Director General of ESA (European Space Agency), right, are seen during the Heads of Agency press conference at the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)

S. Somanath, Director of Vikram Sarabhai Space Centre, Indian Space Research Organization (ISRO), left, NASA Administrator Jim Bridenstine, Hiroshi Yamakawa, President of the Japan Aerospace Exploration Agency (JAXA), Sergey Krikalev, Executive Director for Piloted Spaceflights for Roscosmos, and Johann-Dietrich Woerner, Director General of ESA (European Space Agency), right, are seen during the Heads of Agency press conference at the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)

Pascale Ehrenfreund, Incoming President of the International Astronautical Federation (IAF), left, and Jean-Yves Le Gall, President of International Astronautical Federation (IAF), second from left, facilitate a panel with NASA Administrator Jim Bridenstine, Johann-Dietrich Woerner, Director General of ESA (European Space Agency), Hiroshi Yamakawa, President of the Japan Aerospace Exploration Agency (JAXA), Sylvain Laporte, President of the Canadian Space Agency, Sergey Krikalev, Executive Director for Piloted Spaceflights for Roscosmos, and S. Somanath, Director of Vikram Sarabhai Space Centre, Indian Space Research Organization (ISRO), for the Heads of Agency Plenary of the 70th International Astronautical Congress, Monday, Oct. 21, 2019 at the Walter E. Washington Convention Center in Washington. Photo Credit: (NASA/Joel Kowsky)