APOD: Hubble's Jupiter and the Shrinking... (2022 Jan 09)

[MoonRockMan]

I suppose you must be referring to this unusually dark oblong spot?:


jupiter moon shadow.JPG

Exactly

You have very observant eyes!

Thank you! I've been told I'm observant, and it's hard not to stare at a beautiful picture like this one for a long time.

[johnnydeep]

Exactly

You have very observant eyes!

Thank you! I've been told I'm observant, and it's hard not to stare at a beautiful picture like this one for a long time.

I'm sure it's possible to determine which moon's shadow it is, given the exact time of the Hubble shot. But that's too involved a task for my error prone amateur skills.