NASA Associate Administrator Bob Cabana delivers remarks during a Moon to Mars Town Hall, Thursday, May 18, 2023, at the Mary W. Jackson NASA Headquarters building in Washington. Photo Credit: (NASA/Keegan Barber)

NASA Associate Administrator Bob Cabana delivers remarks during a Moon to Mars Town Hall, Thursday, May 18, 2023, at the Mary W. Jackson NASA Headquarters building in Washington. Photo Credit: (NASA/Keegan Barber)

From left to right, NASA Associate Administrator Jim Free, NASA Administrator Bill Nelson and NASA Deputy Administrator Pam Melroy are seen during a wreath laying ceremony, as a part of NASA's Day of Remembrance, Thursday, Jan. 25, 2024, at Arlington National Cemetery in Arlington, Va. The wreaths were laid in memory of those men and women who lost their lives in the quest for space exploration. Photo Credit: (NASA/Keegan Barber)