The Carnival of Space 138 is up at Nancy Atkinson’s blog. Nancy is the Senior Editor for Universe Today, producer for Astronomy Cast, and project manager for 365 Days of Astronomy podcast. Also, she is a NASA/JPL Solar System Ambassador.
I supplied my article which reviewed the Quicklaunch, sea based hydrogen launch gun system. I note that Quicklaunch provides evidence that my nuclear cannon version of Project Orion has projectile configurations that would work.