The use of space science and astronomy, to explore and study of outer space [1] Study on physical space can be done either by a spaceship controlled by humans or by robots.
The science of astronomy and space to explore and study the external space [1] The study can be done either by the physical space in a spaceship, controlled by humans or by robots.
The science of astronomy and space to explore and study the space outside the 1 []. Study of space in the physical can either by the spacecraft control by human or robot.