I haven't read the novelization and I don't know if its supposed to be canonical. I just wanted to respond to the idea that the Death Star was too small to be a planet buster, because its not.
How could the supergiant military station of 180 km diameter reduce to dust a cosmic body that is hundredfold the station itself?
E = m c^2
Converting even a small fraction of its mass into energy would be sufficient.
If the station had the same average density as water at 1 bar and you were to accelerate the entire thing to light speed it would have an energy of 2.59 * 10^31 J. To put that another way that is 294,138,058,495,685,800 atomic bombs like the one dropped over Nagasaki.
Merry Christmas
Pardon me if this has already been asked but is this going to be released in AVCHD format as well? Please?