satellite moon

I dreamt that I found out the moon isn't what we think it is. It was a round satellite that was sent out a looooooong time ago... made of metal, hollow.... etc. The surface has collected dirt and so on over the thousands, if not millions of years. It was originally sent out to reflect the sun for our evenings, but before the moon, we had only stars. It was kind of a sad thought for me in the dream. I hadn't realized how romantic and beautiful I thought it was until I found out it was a satellite.