I had this idea 25 years ago. Only I wanted it to be in the form of exabyte hard drives that could be continually read and written from Earth via laser, but nev

I had this idea 25 years ago. Only I wanted it to be in the form of exabyte hard drives that could be continually read and written from Earth via laser, but never erased. Wikipedia on the moon, in case we get hit by an asteroid. But hard drive technology is still not good enough to last more than a few decades.