Flag for the Quechua Language

RTG Plutonium Flag from The Martian - 2015

Perhaps the most unique flag in the movie The Martian 2015 - is the Plutonium marker flag.  It is pennant with metallic hoist.  The field is yellow.  It has a green spoke working symbol with a black skull and cross bones on the center.

Usually we see people in science fiction movies about Mars, planting flags on this planet.  But in The Martian we see our hero un-planting a flag. 

Flag for the Portuguese Language

Romanian Language Flag

Italian Language Flag

Swedish Language Flag

The Swedish Language flag has a modified design of the Swedish National flag in the canton.  Language flags are important since the distinguish between language and nation.

Flag for the Finnish Language

The flag for the Finnish Language has a canton based upon the flag of Finland.  However it is modified to be an equal cross, yet conserves the colours of Finland.  Language flags are necessary to distinguish the language from a nation.  As there are native Finnish speakers who are not Finnish nationals.  The green field is reflective of the language flag, and green honors Esperanto.