On 4 october 1957 the soviet union launched the world s first artificial satellite sputnik 1 since then about 8 900 satellites from more than 40 countries have been launched.
What are artificial satellites used for.
Following that feat on nov.
Satellites are increasingly important to the developing world.
A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder.
Satellites can even have people in them like the international.
Imaging satellites produce high resolution data of almost the entire landmass on earth.
Artificial satellites are used for many purposes including communications navigation gathering weather information creating maps and even spying.
There are currently over a thousand active satellites orbiting the earth.
A few hundred satellites are currently working but thousands of unused satellites and satellite fragments orbit the earth as space debris the largest satellite is the international space station which was put together by several different countries including the.
A brief history of artificial satellites.
It creates a communication channel between a source transmitter and a receiver at different locations on earth communications satellites are used for television telephone radio internet and military applications.
In the context of spaceflight a satellite is an object that has been intentionally placed into orbit these objects are called artificial satellites to distinguish them from natural satellites such as earth s moon.
There are about 2 000 communications satellites.
Artificial satellites are able to complete these tasks and endure in space thanks to the unique materials used to create them.
They enter orbit around the earth s atmosphere or travel to other planets after launching through rockets and remain.
A satellite is a moon planet or machine that orbits a planet or star.
The size altitude and design of a satellite depend on its purpose.
Such data used to be a closely guarded military capability but now nearly anyone with an internet connection can find his house using google earth.
3 1957 the soviets launched an even more massive satellite sputnik 2 which carried a dog laika the united states.
Artificial satellites are used to study the earth other planets to help us communicate and even to observe the distant universe.
Artificial satellites come from more than 50 countries and have used the satellite launching capabilities of ten nations.