Triple APOD - February 11, 2025: Crescent Nebula (NGC 6888) By Parker Tkach
Although it's named the Crescent Nebula, the features of the nebula could be said to be reminiscent of the lobes of a brain, perhaps the Brain Nebula has a better ring to it?
Floating space brain or otherwise, this nebula resides 5000 light years from Earth and spans 25 light years, big enough to make Krang or the Spider Mastermind jealous.