Labels:bulletin board | encyclical | fence | pier | pole | poster | sea | sidewalk | sky | skyscraper | water OCR: John Herschel observed maximum brightness 1800s Eta Carinae has ci significantly and, despite periods of lurminosity well below the naked threshold of perception. Moderm space observa hof this star began with the the Einstein Observator Novermber 13, 1978. Thi tained satellite x-ray observator five instruments, each X-r8.7 collect x-r8V images and emissions from numere previously ur knowr Infrarec observations Kevhole Nebula were possible the Irfrared Johr briehtness significantls desui luninosit obsery November tainec issions frorm Infrared vossille bvthe
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