That is jaw dropping and I’ve never heard of the Klerksdorp
spheres. Definitely I will be reading up on this. Thanks!
3-Billion Year Old Manufactured Spheroids? Even NASA is baffled
http://www.freerepublic.com/focus/news/1356382/posts
“...fibrous structure on the inside with a shell around it.”
Obviously prehistoric golf balls (1960’s style, not today’s solid ones). No mystery here.
Weird stuff.