[Bilbo Baggins]

The Global Network Against Weapons and Nuclear Power in Space, based in Gainesville, Florida, claimed such engines pose a risk both during launch and in space.

Maybe someone should tell him that the sun is a *HUGE* nuclear power generator in space, and we don't seem to be dead yet.

Launch is another issue.

[MetalMan]

I think they are concerned about it falling out of orbit, and the heavy materials being spread out far in the atmosphere. But as long as the craft left Earth's gravity to explore deep space, this really isn't an issue.

Unless they're concerned about us pissing off some aliens or something. Who knows how those environment freak's brains work anyhow?

[Fledermaus]

The stupidity of idiots like The Global Network Against Weapons and Nuclear Power in Space are bigger risks.