A is an
instrument that gathers
electromagnetic
radiation.
Possible inventors of the telescope:
Jacob Metius
Galileo Galilei
Isaac Newton
Kinds of Telescopes
Radio Telescopes
Infrared Telescopes
Optical Telescopes
Refractor
Reflector
Compound
Refracting Telescopes (Dioptric)
Reflecting Telescope (Catoptric)
Newtonian
Compound Telescopes (Catadioptric)
Maksutov-Cassegrain
Ultraviolet Telescopes
X-ray Telescopes
Gamma-ray Telescopes
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