- The Illusions Index (illusionsindex.org)
The Illusions Index is a fully searchable, interactive curated collection of illusions. The illusions are categorised into different types, allowing you to search for, and compare, illusions that fall under one or more type. Staff and students at the Centre for the Study of Perceptual Experience have researched each illusion to provide detailed information about what it teaches us about the philosophy and psychology of perception.
- Kappa Scorpii (stars.astro.illinois.edu)
KAPPA SCO (Kappa Scorpii). The curves of stars that make the body of Scorpius, the Scorpion, is one of the most dramatic and recognizable figures of the nightly sky. At the southeastern end, just short of the two-star “stinger” (made of Shaula and Lesath) lies bright, second magnitude (2.41) Kappa Scorpii, which if in most other constellations would bear a proper name, but here tends to be lost among the host of other bright stars.
- Kappa Scorpii (Wikipedia)
Kappa Scorpii, Latinized from κ Scorpii, is a binary star system in the southern constellation of Scorpius. With an apparent visual magnitude of 2.4, this star system is readily visible to the naked eye. Parallax measurements place it at an estimated distance of roughly 480 light-years (150 parsecs) from the Earth.
