space suit

[gkvcaliao4]

Why do the space suits of astronauts have a metallic coating?

[Dagman]

Suits are usually white, at least real ones are. I've seen silver ones in films and tv shows tho! The real ones are made from kevlar which is a bullet proof material. Probably white to deflect heat from direct sunlight? If there are silver ones in real use, perhaps the same reason. 

[Skids]

Kevlar is only as bullet proof as any other material when its thick enough.  A single sheet of kevlar won't stop a bullet.

[Cloned]

also to try and stop tiny little asteroids, travelling at high velocities (speed with direction). That's why there is a lot of layers as well!

[KebabMeister]

As mentioned to reflect heat from the sun - there is no atmosphere in space so it's more severe.  The metallic might also protect against radiation/particle rays?

[Lil,Bit]

Well, its obviouse. :) To protect them from the outer side of earth. u know?