U.S. Secretary of Commerce Wilbur Ross, left, NASA Deputy Administrator Jim Morhard, second from left, Dr. Megan Clark, Head of the Australian Space Agency, second from right, and Australian Prime Minister Scott Morrison, right, pose for a picture after exchanging space agency hats following the signing of a letter of intent between NASA and the Australian Space Agency, Saturday, Sept. 21, 2019 at NASA Headquarters in Washington. NASA and the Australian Space Agency will build on over 60 years of collaboration in space exploration between the two countries and commit to expanding cooperation. Photo Credit: (NASA/Joel Kowsky)

U.S. Secretary of Commerce Wilbur Ross, left, NASA Deputy Administrator Jim Morhard, second from left, Dr. Megan Clark, Head of the Australian Space Agency, second from right, and Australian Prime Minister Scott Morrison, right, pose for a picture after exchanging space agency hats following the signing of a letter of intent between NASA and the Australian Space Agency, Saturday, Sept. 21, 2019 at NASA Headquarters in Washington. NASA and the Australian Space Agency will build on over 60 years of collaboration in space exploration between the two countries and commit to expanding cooperation. Photo Credit: (NASA/Joel Kowsky)

U.S. Secretary of Commerce Wilbur Ross, top left, and Australian Prime Minister Scott Morrison, top right, witness the signing of a letter of intent between NASA and the Australian Space Agency by NASA Deputy Administrator Jim Morhard, left, and Dr. Megan Clark, Head of the Australian Space Agency, right, Saturday, Sept. 21, 2019 at NASA Headquarters in Washington. NASA and the Australian Space Agency will build on over 60 years of collaboration in space exploration between the two countries and commit to expanding cooperation. Photo Credit: (NASA/Joel Kowsky)

U.S. Secretary of Commerce Wilbur Ross, top left, and Australian Prime Minister Scott Morrison, top right, witness the signing of a letter of intent between NASA and the Australian Space Agency by NASA Deputy Administrator Jim Morhard, left, and Dr. Megan Clark, Head of the Australian Space Agency, right, Saturday, Sept. 21, 2019 at NASA Headquarters in Washington. NASA and the Australian Space Agency will build on over 60 years of collaboration in space exploration between the two countries and commit to expanding cooperation. Photo Credit: (NASA/Joel Kowsky)

NASA Deputy Administrator Jim Morhard, second from left, shakes hands with Dr. Megan Clark, Head of the Australian Space Agency, second from right, as they pose for a photo with U.S. Secretary of Commerce Wilbur Ross, left, and Australian Prime Minister Scott Morrison, right, following the signing of a letter of intent between NASA and the Australian Space Agency, Saturday, Sept. 21, 2019 at NASA Headquarters in Washington. NASA and the Australian Space Agency will build on over 60 years of collaboration in space exploration between the two countries and commit to expanding cooperation. Photo Credit: (NASA/Joel Kowsky)