Part four of an occasional series about rings in my Etsy shop that remind me of things.
Ring:

Sterling silver and turquoise paste modernist ring, for sale in my Etsy shop. Click on photo for details.
Thing:

A radio telescope at SETI (Search for Extraterrestrial Intelligence) Institute’s Allen Telescope Array (ATA), a set of 42 radio dishes in Northern California designed to pick up extraterrestrial signals. Photo by David Schlom.
Part 1 was a ring that reminded me of an Iron Age hillfort, Part 2 was a ring that reminded me of an alien spaceship, and Part 3 was a ring that reminded me of a cream horn.
UPDATE: The ring has now sold. Sorry!