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What is presumably a replica of the Skylab experiment spider cage.

This was one of 19 student experiments aboard the Skylab space station in 1973 examined spider web formation in zero gravity. Astronauts monitored the activity of spiders released into this box. At first their webs were rather sloppy, but they soon became more regular as the spiders adapted to weightlessness.

Also note the actual spider Arabella in the vial at left.