SpaceX's Falcon-9 Rocket is a technological wonder and is the first completely reusable rocket.
This lowers the cost of rocket launches into orbit and to refuel the International Space Station. The Falcon-9 rocket made by SpaceX would have taken longer to produce if not for help from NASA and its director Charles Boden.
The director of NASA gave money to SpaceX to fund and develop this Rocket. The Falcon-9 rocket would have taken longer to develop without the incentives given by NASA.
These pictures above are why the costs of space exploration need to be reduced. Lowering the cost of rocket launches is possible by using technology developed by companies like SpaceX.
The exploration of space could lead to the discovery and prevention destruction of comets or asteroids that could kill millions . Furthermore, it is very likely that continuing space exploration will lead to the discovery of habitable planets within reach of humanity.