Planet cracker

[Fred Brackin]

Originally Posted by sir_pudding

You don't need a moon. A old junked spacecraft will do.

To actually splatter the planet it needs to be a big spacecraft. On the order of miles of diameter even at .99C.

Now, if you only want to kill people it doesn't need to be nearly so big. It probably doesn't need to be going that close to C either.

[sir_pudding]

Originally Posted by Fred Brackin

To actually splatter the planet it needs to be a big spacecraft. On the order of miles of diameter even at .99C.

In real life or in GURPS?

[Celjabba]

the energy to detonate an earth like planet so that it fly appart is usually estimated at 2E32 Joules, lower limit.

see http://www.stardestroyer.net/Empire/...DeathStar.html for the details.

(for reference, the sun output about 4E26 joules/secondes according to google.)

So you would need about a week of the sun power output.

Gurps super give 2.000.000.000 hp to Earth. Thats 12.000.000.000 damage for a sure kill.
So, 4 gun over 15 minutes would mean 1 000 000 D of damage per gun per secondes
But Earth have a Dr of 5000000.
So, each gun need to do about 2 500 000 dice of damage - per second.

Unless my math is wrong, wich would not surprise me.

Not that such numbers have any meaning anyway ...
It is ^superscience, so, your gun do as much damage as needed, by definition.

Celjabba