TIL someone decided to point the Hubble Space Telescope at the Moon once:

Now I want to know with large telescopes if there's a danger of setting fire to the sensor with moon-light?

@jhol Oddly enough I had a discussion about this on Twitter about a month ago. Maximum temperature achievable is no higher than Moon's surface (max ~120C). So a huge mirror could warm a person, but not set fire to anything.

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