Gold Protects Astronauts from Radiation

The $1.5 billion Hubble telescope has been protected by gold coatings to provide corrosion resistance and electrical connections. Nearly 41Kg of gold was used in the construction of the US Columbia space shuttle, especially in brazing alloys, fuel cell fabrication, for coated plastic films or in electrical contacts.

If you thought NASA projects were gold-plated, now you have your proof here.