Gee, VanderL is persistent, isn't he? Which is great, coz he raises perfectly valid issues. I wasn't aware of any Jupiter/Io interaction. Those are great photos in that link...but I must confess that the Io volcano looks like, well...a volcano!? And yes, the Near Side & Far Side of our Moon are quite contrasting with respect to surface features. Far Side is heavily pockmarked (so "they" tell us, heh :P )...Near Side has vast "seas" of ancient lava flow. But isn't that logical? The Earth, after all, would buffer much of the Near Side impacts...? And the Martian "Great Rift Valley", yes certainly it is MASSIVE & quite spectacular...but does it really need electricity to explain it? I thought it was caused by a glancing blow from some gigantic asteroid, or something? Maybe a natural geological formation, even, like the valleys and gorges here on Earth. The photos of Europa look stunning, certainly - but once again, the strange surface features are explained if we assume it is one big ice crust surrounding a liquid ocean beneath...much like sea ice here on Earth.

Don't get me wrong, I'm not debunking anything here. In fact, I would love it if someone could throw in some serious anomaly into this forum that blows all our minds! I think Venus's contra-rotation is a weird one, not easily explained...?? Also Uranus's 90-degree tilt...??

About DP's point of interacting solar winds between binary stars, eg Alpha Centauri A & B... That is very interesting, because I know the solar "wind" is actually more of a hyper-speed HURRICANE...So what if 2 solar winds come crashing into each other? Would it create some spectacular sky-show for Alpha Centaurians?? Would there be sufficient force there to trigger nuclear fusion?