[SunkenCiv]

[Credit: Galileo Project, JPL, NASA]

[The Cajun]

Dang, looks like Jupiter got sick one day and...............

[Jack Hydrazine]

Looks like a place where Riddick would end up on.

[CivilWarBrewing]

Cheese ball, mmmmmmmmmm:

[Mastador1]

It kind of looks like a faded out old superball I used to have as kid, right down to the pock marks from the dogs teeth!

[dr_lew]

Here's Io in the 1980 NASA publication, Voyage to Jupiter. I suppose it's a fairly subtle adjustment, in technical terms, to make the transition from this red-orange image to the yellow image of the APOD. I think it's bound to be a problematical question how it would actually appear to a person somehow situated to observe it directly.

Anyway, I'll always think of it as "The Pizza Planet" !

[saganite]

Stinky cheese!

[grimalkin]

It probably smells like eggs. Sulfur is stinky.

[RandallFlagg]

I can’t see Sean Connery from here.

(Reference to the 1981 movie Outland)

[fieldmarshaldj]

Old McDonald had a moon, Eee-i, eee, Io.

(sorry)

[rarestia]

Some of Io's volcanic lava is so hot it glows in the dark.

Huh? Umm, it's lava. Doesn't all lava glow? Or am I missing something?

[Hot Tabasco]

Looks like they found my old bowling ball I threw in the lake about 45 years ago........

[NativeSon]

ALL THESE WORLDS
ARE YOURS EXCEPT
EUROPA Io
ATTEMPT NO
LANDING THERE