History of space exploration

Space exploration is the use of astronomy and the space technology to explore the outer space. It was developed by sending large rockets to space in the early 20th century.  The benefits of exploring space include scientific research, bringing unity in different nations, ascertaining the future survival of humanity and increasing military and strategic advantages against other countries. The early era on space exploration was by Soviet Union and United States of America. From 1990 onwards space tourism was also developed. Today the history of space exploration is seeing new horizons with space tourism, which has also been promoted by the USA in which common people are sent to space as a tourist. Not all can afford it as it is a very expensive program.

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