Elschäfer. del 3.

Soon, the dogs have deduced the truth.
Bissy: Do you remember when we went to Jupiter? [See "2011 - a dog oddyssey]
Pietro: Yes, there were sort of all these little pinpoints of lights on the planet.
Mary: Yes, now when you mention it...
Logan: As if the Jupiterians never turn their lights off!

Logan: It must be the Jupiterians who use GSD:s for electricity!
Mary: We gotta go there and put an end to the exploitation!

As you might remember the dogs touched a black monolith, which gave them the ability to fly through space in a kind of transparent bubbles.
Logan: This ability really comes in handy!