Hi!
If there was most of the sun's mass left over, then all of Earth isn't necessarily dead. |
This is about the only thing I agree with you.
See, when the Nova happens (and our Sun is still considered to be by about one third too small for it), sun's outer shell is blown away, with quite some percentage of the core. All that mass is very hot (hot on the cosmic scale - several millions degrees of Kelvin). When that mass hits a planet, that planet doesn't melt, it
evaporates (not even that, it converts to plasma). Not the whole planet, it has too large mass, but its surface is gone. And the surface is again measured in planetary scale - several tens or hundreds of kilometers are gone, before the nova ceases to radiate.
About the only thing for a planet (and anything else) to survive a Nova is not to be there when it happens. If it stays, it becomes a molten rock for next few thousand years. And when it cools down, it becomes just a dead rock, probably not even in orbit. The star has blown away quite some of its mass, so its gravitation is smaller, and the planet was also pushed away with the force of explosion.
Now where in that cosmic cataclism do fit our punny fragile bodies and ships, even in the GalCiv time?
Nowhere. When sun goes away so violently, planets also go. And if planets go, life (as we know of) goes too.
BR, Iztok