should people spend money on space exploration

Intro space explored in two ways - by studying it from earth using powerful telescopes, and by launching spacecraft to get a  view.

P.1 is by unmanned space probes the first pictures of the far side of the moon were sent back by Luna 3 space probe in October 1959.

P.2 Manned missions have only reached as far as the moon, but there maybe a manned mission to mars 2020 Apollo astronauts took three days to reach the moon.

P.3 No space probe has ever come back from another planet travel to the star would take hundreds of years, but one idea is that humans might go there inside gigantic spaceships made from hollowed-out asteroids.

P.4 Another idea  is that spacecraft on long voyages of exploration may be driven along by pluses of laser light.