Original sentence: Men Into Space is a half-hour American sci-fi series broadcast in black and white from September 30, 1959 to September 7, 1960 by CBS which depicted the efforts of the United States Air Force to explore and develop space
Edited sentence: Men Into Space was a half-hour American sci-fi series broadcast in black and white from September 30, 1959 to September 7, 1960 by CBS which depicted the efforts of the United States Air Force to explore and develop space