Captain Seafort

They're also way outside the system, given that they're using "long-range" turbolasers, and even the bog-standard version can hit planets in the green belt from the edge of the system (per the Enemy Lines duology). Indeed, it may be that they are firing full-power shots, and they're simply at the outer edge of their range - the fact that TL bolts shed energy laterally means that even tera- or peta-ton shots must be reduced to a mild tickle at some point, even if that point is a few dozen light hours out.

In other words, nothing even remotely resembling a BDZ, which would in any case be counterproductive. As you quoted: If Caedus was trying to destroy the planet he could have done so in hours, possibly faster, as has already been explained. He wasn't, he was trying to draw off the Confederation fleet - force them to break off their drive on Coruscant to defend Kashyyyk. To do that he had to ensure that the bombardment lasted long enough for any Confederation intervention to be meaningful.

In 1945 nuclear weapons were the ultimate power of this planet. That doesn't mean that a conventional bomber raid was anything to sneeze at. Or inferior, given what happened to Tokyo a few months earlier. It simply means that a nuke-armed bomber make more of a mess than a conventional bomber.

If you rearranged Mir's modules into a straight line the station would be about 70-odd metres long, with a mass of 130 tons. Scale that up to 8k and it would be about 140 million tons. JMS could have done with adding another order of magnitude or two to B5's mass.

A portion which on it's own would be enough to cause Alderaan to go poof.

Then you're in even worse shape, given that Phobos is far larger than the Ex.

With the warp field. As for shoving the Death Star around like this, I very much doubt it, given that the moon in question is about half the size of the Ex.

Very slowly. They expected to take seven hours to accelerate the moon by 4km/s.

Really? It sounds like pitching these two against each other could be good entertainment.

Cheers. As for Mr KirkSkywalker...wow. Although scarily I'm not sure if it's the most bonkers "theory" I've ever heard or not.

Who the fuck treats either of them as hard sf? And where's the WTF smilie when you need it? Never go there myself - what did this character get up to?

In reality, sure. Coruscant obviously does though. One word: neutrinos. SW vessels (and probably city-planets as well) use neutrino radiators to dump excess heat, which removes the problem of the dumped heat interacting with the environment. Yes, it's effectively magic, but so are hyperdrives, lightsabers, and pretty much every other technology in SW.

What lack of effects? There was a km-wide fireball. As for the rest, the obvious conclusion is that they're a lot weaker - the 130kt shot was when Veers ordered maximum power to take out the generator.