As early as the mid-19th century, early cameras were sent on balloons to observe the Earth from above.
Galileo's observation was that all the planets revoled around the earth and he though earth was a middle planet
Explain how the remote sensing satellites examined the earth from the space?
it once was a planet in earth
radarsat is the first Canadian earth observation satellite :)
Usually by simple observation.
Yes, it certainly was. What a sagacious observation !
under observation
You are not directly observing it
Observations
Earth Day was started by Gaylord Nelson.
There are two types of satellites that are located in a foxed spot over earth the first is reconnaissance satellites for observation of earth and usually used by the military.. The second is earth observation satellites and are intended for environmental monitoring
can be understood through carefully observation.