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50 Best Space Photos of 2015
NASA’s Solar Dynamics Observatory captured this close-up image of an outburst on the sun's surface, between Nov. 3-5, 2015. Though the sun’s extreme ultraviolet light is invisible to our eyes, the wavelength is colorized here in red. (NASA/SDO) 2015 was a banner year for space exploration. Some of the stunning discoveries and most-memorable celestial images are rounded up in the slideshow above; it's a look back at a year spent among the cosmos. In March, NASA launched its Magnetospheric MultiScale...