NASA Administrator Bill Nelson, left, speaks with Bulgarian Minister of Finance Assen Vassilev during a meeting, Wednesday, Feb. 7, 2024, at the Mary W. Jackson NASA Headquarters building in Washington. Photo Credit: (NASA/Joel Kowsky)
NASA Administrator Bill Nelson, left, speaks with Bulgarian Minister of Finance Assen Vassilev during a meeting, Wednesday, Feb. 7, 2024, at the Mary W. Jackson NASA Headquarters building in Washington. Photo Credit: (NASA/Joel Kowsky)