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The Hubble Space Telescope (HST) is a space telescope in low Earth orbit with a 2.4 meter main mirror capable of observing near ultraviolet, visible, and near infrared light. It was launched in 1990 and remains in operation (following five servicing missions) as of 2015.

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Why is the aperture door of the Hubble Space Telescope so weirdly shaped?

Aperture door structure When considering the potential weight savings and strength of the material, it is important to note that the aperture door is made of lightweight aluminum honeycomb material (Hubble … Considerations of the sharp corners The sharp corners were not without problems, as evidenced in e.g. the protective cover used during transportation (Hubble Space Telescope Protective Cover System p. …
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