[SunkenCiv]

[Credit & Copyright: Peter Tuthill (Sydney U.) & James Lloyd (Cornell)]

[David Isaac]

I think the “Black Widow Nebula” would be more descriptive (red hourglass, and all that).

[muawiyah]

Easy to think off this one as manufactured ~ and maybe already going somewhere else.

Eventually somebody will come up with its relative movement in that part of the universe.

[grey_whiskers]

The very bright patch in the center looks like someone is cutting the very fabric of the space-time continuum from the outside with an box cutter and letting the light in.

Cheers!

[martin_fierro]

What could cause a nebula to appear square?

Hey, it could happen.