First rocky planet found outside solar system

[The Brain]

I support any attempt to shoot Tim 500 light years away.

Into a black hole.

You = Obamaraciss

[Neil]

Orion is undoable because of wear and tear on the pusher plate.

The wiki seems to disagree:

calculations and experiments indicate that a steel pusher plate would ablate less than 1 mm if unprotected. If sprayed with an oil, it need not ablate at all (this was discovered by accident; a test plate had oily fingerprints on it, and the fingerprints suffered no ablation).

I was more thinking about wear on the moving parts, but it seems, judging from your wiki source, that damage to the pusher plate is also a serious concern.

[ulmont]

Orion is undoable because of wear and tear on the pusher plate.

The wiki seems to disagree:

calculations and experiments indicate that a steel pusher plate would ablate less than 1 mm if unprotected. If sprayed with an oil, it need not ablate at all (this was discovered by accident; a test plate had oily fingerprints on it, and the fingerprints suffered no ablation).

I was more thinking about wear on the moving parts, but it seems, judging from your wiki source, that damage to the pusher plate is also a serious concern.

Well, definitely a serious concern, considering you're blowing up a nuclear bomb next to the pusher plate...