Manned space flight, and the new worlds it would serve to unlock, are essential to the long-term survival of humanity  The Earth has suffered a number of catastrophic events in its history. The galaxy is permeated with giant meteors like the one that struck the Earth 16 million years ago, which succeeded in wiping out the dinosaurs and precipitating an ice age. [1] Other cosmic risks exist as well, such as the threat of deadly radioactive waves given off by supernovae that can span the gulfs between stars and scorch planets many light-years away. Likewise, risks closer to home could prove equally destructive. Intense solar flairs from our sun could scorch a whole side of the planet. While all these occurrences are very rare, they remain possibilities, and should any of them ever occur, it could prove the end of humanity, and even life on Earth. In order to guarantee the survival of the human race, manned space flight must be made viable. One day it may prove necessary to leave this cradle of life in pursuit of a new home, and it would be wise to invest in developing the technology to do so rather than to wait until it is too late and only be able to watch as mankind’s doom arrives.  [1] Gerakines, Perry. “What is the Chance of an Asteroid Hitting Earth and How Do Astronomers Calculate It?” 2005.