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Comment Re:Hard to imagine Project Orion? (Score 2) 41

There's actually a fantastic refinement of Project Orion, called the Nuclear Salt Water Rocket. (see: wikipedia article, also this article)

Basically -- the idea is to have a mix of water and U235 mixed to a level _just below criticality_ stored as your fuel. You then inject it at high velocity into your rocket exhaust where it reaches critical density; and ignites. Giving you a "constant flow" nuclear explosion (i.e. not intermittent bursts like Orion). It's usable today, using todays technology.

The only major disadvantage is you obviously can't use it in Earths atmosphere -- you do need to haul the rocket up to orbit (and point it away from earth) before you ignite it.

Comment Re:Odd odds? (Score 1) 82

The problem is: If it happens, we're fucked.

One satellite breaks up into a thousand itty bitty little flying pieces of scrap metal death that can break up other satellites in turn leading to a nasty chain reaction. The fact it _has_ happened is not cause for relaxation - that collision is causing consequences today.

Two big satellites colliding at 14km/sec could very well create the nightmare scenario. Because these are high orbits - it'll take decades if not centuries for the shrapnel to leave its stable orbit. We very well could be grounded as a species until things cool down.

tl;dr clean up your damn litter *shakes fist*!

Comment Re:overpriced (Score 1) 62

It's only 10-20% because it's being bottlenecked by the CPU/RAM in the benchmarks they're using. In a pure-GPU comparison it's up to 40% faster.

You'll see the biggest benefit going from 2K/4K to 8K gaming (which in itself is stupid, but I digress...) because the CPU won't be the bottleneck there - and the added fill rate will help.

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