NASA astronaut Rick Mastracchio decided to take selfies to the next level earlier this year by snapping you the photo you see above during a spacewalk. For the technophiles wondering, astronauts use three Nikon D2Xs cameras to capture the images you see regularly being posted online. One thing you may not know is that the radiation damages pixels on the sensor, and sometimes, the damage is so great that the camera does not make it back to space again. Continue reading for more extreme and dangerous selfies that will make you look twice.

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