User blog comment:PitaKang/Funday Monday 3: What would an interstellar civilization look like?/@comment-4621372-20130503231446/@comment-4621372-20130505124656

Umm, what? I didn't say the Alcumbierre drive has anything to do with wormholes. And expanding the space behind it involves using negative energy- which we cannot produce.

The wormhole segment, though in the same sentence, is not intending to be anything about Alcumbierre drives, though I can see the confusion.

Radiation is subatomic partcles impacting other particles.

True, yes. A spaceship would never hit an asteroid, or even a speck of paint. NASA cannot sense a lone hydrogen atom at those speeds- or,actually, at any speeds.

It doesn't matter whether they propose going around or through the barrier. Can't be done.

Yes, sorry. meant a fifth, as I posted elsewhere.