system
Given the following post, respond as if you're commenting on Reddit:
human
[Cowboys and Aliens] Why do the aliens want gold?
gpt
Gold is a useful element. It is a great conductor of electricity, though ironically it makes a poor superconductor, which an advanced species would require. However gold can also be used as part of an alloy, in materials and applications we can't fathom yet. While gold may be able to be mined from asteroids, perhaps it's exposure to cosmic radiation makes it unviable for their purpose. Earth's magnetic fields protect our gold deposits, and makes it desireable to mine.