What is the different types of natural satellite?

Answer 1

There is different types of artificial satellites, each for different uses. For example :

Weather satellites help meteorologists predict the weather or see what's happening at the moment. Typical weather satellites include the TIROS, COSMOS and GOES satellites. The satellites generally contain cameras that can return photos of Earth's weather, either from fixed geostationary positions or from polar orbits.

Communications satellites allow telephone and data conversations to be relayed through the satellite. Typical communications satellitesinclude Telstar and Intelsat. The most important feature of a communications satellite is the transponder - a radio thatreceives a conversation at one frequency and then amplifies it and retransmits it back to Earth on anotherfrequency. A satellite normally contains hundreds or thousands of transponders. Communications satellites are usually geosynchronous. Broadcast satellites Broadcast Television signals from one point to another.

• Scientific satellites perform a variety ofscientific missions. The Hubble Space Telescope is themost famous scientific satellite, but there are many others looking at everything from sun spots to gammarays. ( See the article of the telescopes)

-> Hiten scientific satellite

• Navigational satellites help ships and planes navigate. The most famous are the GPS NAVSTAR satellites, r escue satellites respond to radio distress signals.

-> NAVSTAR satellite

• Earth observation satellites observe the planet for changes in everything from temperature toforestation to ice-sheet coverage.

-> ENVISAT

• Military satellites are up there, but much of the actual application information remains secret. Intelligence-gathering possibilities using high-tech electronic and sophisticated photographic-equipment reconnaissance are endless. Applications may include relaying encrypted communication, nuclear monitoring, observing enemy movements, early warning of missile launches, eavesdropping on terrestrial radio links, radar imaging, Photography (using what are essentially large telescopes (see the article on the telescopes ) that take pictures of militarily interesting areas)