Thank you for this daily dose of existential dread 👌

Are they also unbound by momentum?

We already had a discussion about how that doesn't make sense with this different comic: https://lemmy.ml/post/14518058

Maybe ghosts are what dark matter is made out of.

This is incorrect. Ghosts do have mass, they just don't interact with the EM force and only through the gravity, the strong and the weak interaction (and a fifth interaction that we don't know about). That's right, all that dark matter and dark energy is actually ghosts.

So you're telling me there are space ghosts, from coast to coast? 😮

SpaceGhost(s)! Coast to (galactic) coast!

Is the reference frame the CMB? You'd think you could just choose the reference frame at that point and move however you want, but arguing the physics of hypothetical metaphysical beings probably doesn't make much sense.

Eehh objects in motion stay in motion? Does that apply to ghosts? So would the ghosts fly off in straight lines since no longer subjected to suns gravity ??

The only things that aren't bound by gravity are massless. Massless things always have to be moving at the speed of light. So really the question is, what direction would the ghost shoot off to? Momentum would have to be preserved, so it'd be the opposite direction of where the corpse drops. Or maybe the corpse just move a teensy bit to the opposite direction of the ghost?

Note: this assumes Newtonian or at least semi classical physics. In general relativity, there is no such thing as being unbound by gravity.

By this line of thinking, dying in a mass tragedy might be the best thing that could happen to you. At least you wouldn't be in solitary confinement for eternity.

This actually explains a lot.

That explains why there are no ghosts.

I have a memory of seeing this exact idea in another comic on here but can’t find it! (Assuming it is a case of multiple discovery and not plagiarism)

Even the galaxy fucks off very quickly from you.

But now we know who inhabits all those spoopy voids.

I always thought that this would be a similar issue with time machines. Go back even 1 second and you're floating in the void.

Relative to what? That makes no sense.

Awesome idea for a Lovecraftian horror story. Maybe the ghosts leave a scent trail that attracts a ghost-eating planet-sized alien

They go coast to coast?

But in which frame of reference? Our solar system is also moving, so is our galaxy, our universe is "expanding", and let's not even talk about the multiverse, that's overdone as it is.

We move (with the Sun) around the Milky Way at about 792.000 km/h. At that speed, you wouldn't even see the earth getting away from you.