They aren't always in the highest places, but it is a great advantage to place them as high above the Earth as possible so the image isn't as distorted by the atmosphere.
Siting telescopes at high altitudes enables observations to be made above cloud level. This means you don't have to wait for a sunny day without cloud..
Telescopes that work grounded on Earth include optical telescopes, radio telescopes, and infrared telescopes. However, space telescopes, such as the Hubble Space Telescope, do not operate from the Earth's surface. Instead, they are placed in orbit to avoid the Earth's atmosphere, which can distort observations.
If you measure from sea level, Mt. Everest is highest. If you measure from the center of the earth, Mt. Chimborazo is highest.
Observations from Earth-based telescopes are obscured by the atmosphere.
Telescopes are used to see things that are far away from earth. Using telescopes we can see things that are millions of miles away. Most of the telescopes are on Earth but some of them are in space such as the Hubble Space Telescope.
Radio signals are sent from Earth, to operate the telescopes.
Because it is among the highest places on earth
Because it is among the highest places on earth
scientist on earth build telescopes on top of
Light enters space telescope without distortion from Earth's atmosphere
X-ray telescopes are used to study mainly the Sun, stars and supernovas. X-ray telescopes work better at very high altitudes on the Earth's surface.
There are many places online that one can find and purchase used telescopes. One of the most trusted and cheap places to buy these is the website called ebay.
Hundreds.