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With telescopes, size does matter | Science | In-depth reporting on science and technology | DW | 23.10.2015
Ask Ethan: Why Don't We Build A Telescope Without Mirrors Or Lenses?
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![Comparison between primary mirrors of optical telescopes [8]. | Download Scientific Diagram](https://www.researchgate.net/publication/334862407/figure/fig2/AS:787266138038274@1564710282143/Comparison-between-primary-mirrors-of-optical-telescopes-8.png "Comparison between primary mirrors of optical telescopes [8]. | Download Scientific Diagram")
Comparison between primary mirrors of optical telescopes [8]. | Download Scientific Diagram
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