Here's why:
* Heat Reflection: Gold is an excellent reflector of infrared radiation, which is the type of radiation that carries heat from the sun. This helps to protect astronauts from overheating during spacewalks or while exposed to the sun's rays.
* Visibility: While gold is reflective, it also allows astronauts to see clearly through their visors. It doesn't significantly distort their vision like some other metals might.
* Durability: Gold is a very durable metal, which is important for a visor that needs to withstand the harsh conditions of space.
It's important to note that the gold coating is very thin, and you wouldn't actually see it as a shiny gold color on the visor. It's mostly there for its functional properties.