Deep space exploration

Deep space exploration (also deep-space exploration) is the term used for the exploration of deep space, within or away from the Solar System. It is the branch of astronomy, astronautics and space technology that is involved with exploring the distant regions of outer space. Physical exploration of space is conducted both by human spaceflights (deep-space astronautics) and by robotic spacecraft.

At present the furthest space probe mankind has constructed and launched from Earth is Voyager 1, which was announced on December 5, 2011 to have reached the outer edge of the Solar system, and entered interstellar space on August 25, 2012. Deep space exploration further than this vessel's capacity is not yet possible due to limitations in the space-engine technology currently available.

Some of the best candidates for future deep space engine technologies include anti-matter, nuclear power and beamed propulsion. The latter, beamed propulsion, appears to be the best candidate for deep space exploration presently available, since it uses known physics and known technology that is being developed for other purposes.

In 2012, the Defense Advanced Research Projects Agency announced the award of $500,000 to former astronaut Mae Jemison to fund a project with the goal of sending future astronauts out of the Solar System. Jemison aims to increase public interest in future deep space exploration projects. Upon awarding the money to Jemison, a "100 Year Starship" symposium was held in Houston, Texas to discuss interstellar travel. Topics discussed include "time-distance solutions; life sciences in space exploration; destinations and habitats; becoming an interstellar civilization; space technologies enhancing life on earth; and commercial opportunities from interstellar efforts".

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