Invading a cinema near you, soon  IN 1945, as everyone knows, an
elite group of Nazi officers abandoned the collapsing Third
Reich and blasted off to the moon to establish the Fourth. In
2018, surprised when an American astronaut stumbles upon their
swastika-shaped command base on the far side of the moon, they
decide the time has come to attack the Earth.  “Iron Sky”, a
sci-fi black comedy by Timo Vuorensola, a Finnish director,
which debuted at the SXSW festival in Austin, Texas, this week,
is distinguished not so much by its absurd plot and wacky
designs (German soldiers in 1940s stormtrooper-style space
suits) as for the way it was made. Mr Vuorensola's previous
film, “Star Wreck”, another space spoof, was done over seven
years on a budget of just €15,000 (now $20,000). It was shot
largely in the living room of one of the producers (with space
scenes and sets added digitally), and made with props, costumes
and actors solicited from fans on the internet.  For “Iron Sky”
the budget was €7.5m, but Mr Vuorens