Nature Bank

Deep space exploration is the term used for the exploration of deep space and which is usually described as being quite distant away from Earth, within or away from the solar system. It is the branch of astronomy and space technology which is involved with exploring the distant regions of outer space. Physical exploration of space is conducted both by human spaceflights 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 edge of the Solar System, and entered interstellar space on August 25, 2013. Deep space exploration further than this vessel's capacity is not yet possible due to current space engine technology 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.  Source

he Universe is all of spacetime and everything that exists therein, including all planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy. Similar terms include the cosmos, the world, reality, and nature. The observable universe is about 46 billion light years in radius. Scientific observation of the Universe has led to inferences of its earlier stages. These observations suggest that the Universe has been governed by the same physical laws and constants throughout most of its extent and history. The Big Bang theory is the prevailing cosmological model that describes the early development of the Universe, which is calculated to have begun 13.798 billion years ago. Observations of supernovae have shown that the Universe is expanding at an accelerating rate. There are many competing theories about the ultimate fate of the universe.  Source