Life is like a bubble. Sometimes, you just have to roll with it:

⁣The Bubble Nebula is about 7,100 light-years from Earth in the constellation Cassiopeia. Discovered in 1787 by British astronomer William Herschel, the star is about 4 million years old and is about 45 times more massive than our Sun. You can see the star in the 10 o’clock position of the bubble. ⁣

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The bubble formation comes from hot gas that escapes into space like a “stellar wind” moving 4 million miles per hour sweeping up the cold gas in front of it. You can distinguish the gases by the different colors they emit due to their temperature. Oxygen is hot which emits blue light. The cooler parts are emitting yellow from hydrogen and nitrogen combined. ⁣

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Image description: A light blue colored inflating bubble with a small pink star on the upper left side of the bubble. Dense pillars of cool hydrogen gas laced with dust appear at the upper left of the picture, and more "fingers" can be seen nearly face-on, behind the translucent bubble. Gas and sparsely spread stars fill the background with the darkness of space.⁣

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Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) ⁣

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21 December 2023

 

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