1 Spanners: Programmable nano-goo is a form of nanotechnology smart matter, made of billions of microscopic machines.
2 Spanners: It’s capable of moving around as an amorphous mass and locking together into rigid structures of any shape and physical properties.
3 Spanners: It can also disassemble and rearrange other matter on a molecular level, regardless of what it is.
3 Iki Piki: Is it necessary to go into so much detail?
4 Spanners: You want to know how you’re going to die, don’t you?
4 Serron: It’s really painful, too.

It was kind of inevitable that Serron would one day be in danger of initiating a grey goo apocalypse.

Lists of ways that civilisation can be destroyed are huge idea sources for the Space theme.