Unmanned
Unmanned - Space probes are a form of robotic spacecraft.
Manned means I has not been around that long and unmanned means around a loong time
there is no man in the space craft
Manned spacecraft generally require a much higher data collection time than unmanned stations
The most obvious answer to your question is the fact that people have to return to earth, while an unmanned craft can stay in space infinitely. Manned spacecraft require things like oxygen, water, food and communications equipment, none of which are required by an unmanned spacecraft. That means unmanned spacecrafts can be sent into space for a fraction of the cost of a manned spacecraft. So basically, it's much cheaper and safer to send unmanned spacecrafts to explore the universe.
Unmanned - Space probes are a form of robotic spacecraft.
Manned means I has not been around that long and unmanned means around a loong time
there is no man in the space craft
Spacecraft is the generic term there are both manned and unmanned types such as satellites for the unmanned variety.
Manned spacecraft generally require a much higher data collection time than unmanned stations
Several advantages; mainly:A human needs food, air, and protection. An unmanned craft needs none of these; its use of energy and other "extras" is much less than for a human.An unmanned craft can be sacrificed; there is no moral obligation to return it safely to Earth.In summary, all this makes an unmanned spacecraft much cheaper than a manned spacecraft.
The most obvious answer to your question is the fact that people have to return to earth, while an unmanned craft can stay in space infinitely. Manned spacecraft require things like oxygen, water, food and communications equipment, none of which are required by an unmanned spacecraft. That means unmanned spacecrafts can be sent into space for a fraction of the cost of a manned spacecraft. So basically, it's much cheaper and safer to send unmanned spacecrafts to explore the universe.
Chemical rockets are generally used on manned spacecraft. Ion propulsion has been used on a few unmanned spacecraft.
Space-docking is the procedure by which spacecraft connect with other spacecraft in space. This is accomplished by careful manuevering, contact at a slow speed, and the interlocking of latches to secure the craft together. Docking is done with both manned and unmanned spacecraft, the connection allowing transfer of goods or material, or controlled access from one vehicle to the other. (For example, a manned vehicle might dock with a satellite to keep it steady while conducting repairs. Alternately, an astronaut can "spacewalk" away from his vehicle and attach himself to the satellite.)
whta is the difference between a manned and unmanned spaceflight
whta is the difference between a manned and unmanned spaceflight
On May 30, 1966 the Surveyer 1 was the first unmanned U.S. spacecraft to land on the moon. The first manned spacecraft landed on the moon on July 20, 1969.