Question

what does the non-optical telescopes detect?

Answer 1

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\[ \huge{\color{purple}{\textbf{W}} \color{orange}{\cal{E}} \color{green}{\mathbb{L}} \color{blue}{\mathsf{C}} \color{maroon}{\rm{O}} \color{red}{\tt{M}} \color{gold}{\tt{E}} \space \color{orchid}{\mathbf{T}} \color{Navy}{\mathsf{O}} \space \color{OrangeRed}{\boldsymbol{O}} \color{Olive}{\mathbf{P}} \color{Lime}{\textbf{E}} \color{DarkOrchid}{\mathsf{N}} \color{Tan}{\mathtt{S}} \color{magenta}{\mathbb{T}} \color{goldenrod}{\mathsf{U}} \color{ForestGreen}{\textbf{D}} \color{Salmon}{\mathsf{Y}} \ddot \smile }\]
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Answer 2

The Hubble telescope is an optical telescope in space. You may wish to view this BBC News report from 2005 about the Hubble Space Telescope. Objects in the universe emit other electromagnetic radiation such as infrared, X-rays and gamma rays.

For more go here
http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/radiation/originsrev3.shtml