Complex sentence: The mission CubeSat technology is called Mars Cube One (MarCO), a six-unit CubeSat, 14.4 inches (36.6 centimeters) by 9.5 inches (24.3 centimeters) by 4.6 inches (11.8 centimeters).
Split into simpler sentences: The mission CubeSats technology is called Mars Cube One (MarCO). MarCO's design is a six-unit CubeSat, 14.4 inches (36.6 centimeters) by 9.5 inches (24.3 centimeters) by 4.6 inches (11.8 centimeters).