Mysterious Rings of Supernova 1987A http://1.usa.gov/zTTHGd Lots still to learn about the Universe, which is why we build big telescopes! #JWST
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Mysterious Rings of Supernova 1987A http://1.usa.gov/zTTHGd Lots still to learn about the Universe, which is why we build big telescopes! #JWST
