The shape of the segmented mirrors of twin keck observatory telescopes, gran telescopio canarias, and the james webb space telescope (scheduled to be launched in late 2018) is hexagonal.
A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation.
The Hubble Space telescope is the longest surviving, and most successful, space telescope.
There are three main types of telescope. and they include :
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