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Next-generation space telescopes could be built off-planet

The Hubble Space Telescope was visited by astronauts between 1993 and 2009 during five space-shuttle missions. Here, two space astronauts work on Hubble during the first maintenance mission, fixing the telescope's mirror and installing a new camera. Credit: NASA When it comes to telescopes, size matters. To keep learning about the universe, astronomers are increasingly interested in building larger and …

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