Australian Prime Minister Scott Morrison, second from left, poses for a picture with NASA astronaut Alvin Drew, left, and former NASA astronauts Andy Thomas, second from right, and Pam Melroy, 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)