San Francisco sphere

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Earliest known poster for Gigantic obsidian sphere.

The San Francisco sphere (gigantic obsidian sphere, etc.) is an unnatural feature of San Francisco Bay, known since at least 2022.

In the News

Fiction cross-reference

Nonfiction cross-reference

External links

Social media

  • Post @ Twitter (12 July 2023)
  • Post @ Twitter (22 February 2023)
  • Post @ Twitter ()