space exploration

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Space exploration is the use of astronomy and space technology to explore outer space.[1] Physical exploration of space is conducted both by human spaceflights and by robotic spacecraft.
While the observation of objects in space—known as astronomy—pre-dates reliable recorded history, it was the development of large liquid-fueled rocket engines during the early 20th century that allowed physical space exploration to become a reality. Common rationales for exploring space include advancing scientific research, uniting different nations, ensuring the future survival of humanity and developing military/strategic advantages against other countries. Various criticisms of Space Exploration are sometimes made, generally on cost or safety grounds.
The major paradigm today is that both government entities and the private sector have space exploration objectives.
Private Ventures
Dozens of private projects have been announced. Among them, Bigelow Aerospace has made two orbital payload deliveries and plans to build the first in-orbit hotel within the decade. The Google Lunar X-Prize also promotes private space exploration by offering first and second place prizes totaling $30 million for the first privately funded robotic lunar landing. Companies such as White Label Space or Astrobotics are studying mission concepts for the purpose of entering teams. Space Exploration Techn.ologies Corp also performed a successful flight of their Falcon 1 launch vehicle [4]. Virgin Airlines has announced taking vehicles up into space
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