An Historical Retrospective of the Future: The Cave Nebula in Hydrogen, Oxygen, and Sulfur via NASA https://t.co/ETQk6aKF9n https://t.co/rReuVdo0aP

The Cave Nebula in Hydrogen, Oxygen, and Sulfur via NASA https://t.co/ETQk6aKF9n https://t.co/rReuVdo0aP

The Cave Nebula in Hydrogen, Oxygen, and Sulfur via NASA https://t.co/ETQk6aKF9n pic.twitter.com/rReuVdo0aP
— Dean Norris (@geekynerdyone) November 14, 2018

from Twitter https://twitter.com/geekynerdyone

November 14, 2018 at 12:49AM
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