Astronomy Today

Space Telescopes

Why is it important to have telescopes in space?

The thick layer of gas that is in our atmosphere blocks most of the electromagnetic radiation that reaches our planet from astronomical sources, including gamma rays, X-rays, far-ultraviolet light, and far-infrared light. Atmospheric disturbances such as wind, rain, and snow, also block the view of space. Thus, space telescopes can take much clearer pictures than can be taken from Earth; they can collect light that simply does not reach the surface of Earth.


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