Abell 39

Goodness gracious, great balls of… oxygen?

Well, it was certainly born of fire. This is planetary nebula Abell 39, one of the largest spheres in the galaxy… it’s 2.6 light-years across!

It really is that color blue. You’re seeing ionized Oxygen gas blown off by the dying star in its center.

Look closely for the distant galaxies in the background, including a couple seen through the nebula itself!

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