Has there been any investigation of valuable minerals elsewhere in the solar system?

Although our technology hasn’t reached the point of being able to effectively mine away from the Earth, has anyone looked into the availability of valuable minerals on the Moon? Mars? Asteroids? I’m curious in valuable minerals only, particularly rare earth… Continue Reading

I have researched solar power and still wonder why it isn't used more in the usa?

I have posted similar question before about solar power and asking why the usa hasn’t done worth spit in geting more solar power. A 100 sqr ft of solar panel durring full sun makes roughly 1kw. Solar powered water heaters… Continue Reading