![This incredible image shows a pair of “nuclear superbubbles,” one over 4,900 light-years across and the other over 3,500 light-years. : r/spaceporn This incredible image shows a pair of “nuclear superbubbles,” one over 4,900 light-years across and the other over 3,500 light-years. : r/spaceporn](https://preview.redd.it/h5uxu0fla2z51.jpg?auto=webp&s=9663081f05f0e3d8eec89dfe93b8530d24c63e87)
This incredible image shows a pair of “nuclear superbubbles,” one over 4,900 light-years across and the other over 3,500 light-years. : r/spaceporn
![Mystic Mountain' is over 3 light years tall and shows the glow of oxygen in blue, hydrogen & nitrogen in green, and sulfur in red. (NASA Chandra X-Ray Observatory) : r/space Mystic Mountain' is over 3 light years tall and shows the glow of oxygen in blue, hydrogen & nitrogen in green, and sulfur in red. (NASA Chandra X-Ray Observatory) : r/space](https://preview.redd.it/jay8el5r8xq31.jpg?auto=webp&s=ebf0e71edabe28c94255250ca720c35cce310143)
Mystic Mountain' is over 3 light years tall and shows the glow of oxygen in blue, hydrogen & nitrogen in green, and sulfur in red. (NASA Chandra X-Ray Observatory) : r/space
![Amazon.com: Goodnight Exomoon (Smithsonian Kids Storybook): 9781680529340: Kimberly K. Arcand, Cottage Door Press, Cottage Door Press, Kelly Kennedy, Kelly Kennedy: Books Amazon.com: Goodnight Exomoon (Smithsonian Kids Storybook): 9781680529340: Kimberly K. Arcand, Cottage Door Press, Cottage Door Press, Kelly Kennedy, Kelly Kennedy: Books](https://images-na.ssl-images-amazon.com/images/I/81QH784scyL.jpg)