Online devastation calculator

[KennyR]

I went to the other side of the scale, standing 5 metres away from a 5cm rock hitting at 500 m/hour - and I got second degree burns? :crazy:

[KennyR]

...and then suddenly a 999m rock destroys London. ;-)

[KennyR]

Or what about a chunk of degenerate iron from a stellar core? Melts at 120,000K, weighs a tonne per cubic centimetre...or more. That would make a nice little hole, even a pebble of it.

[KennyR]

Blobrana wrote:
If you could collect enough wimps an inject them into the Martian core, then you would increase the gravity of Mars...

But how would you hold them in, if they go straight through normal baryonic matter? ;-)

[KennyR]

Karlos wrote:
Surely they'd just oscillate about the common centre of gravity and gradually come to rest at the centre, right?

Sure they would. Except the common centre of gravity would be the Sun or Jupiter, not Mars.

No matter how weakly they interact I doubt they'd travel trhrough an entire planetary mass without some kinetic energy lost to other processes somewhere.

Why not? A neutrino can travel through 35 light years of dense matter and not interact, and WIMPs interact even less.

[KennyR]

Wrap yourself in velcro and lunge at her some dark night.