An Etymological Dictionary of Astronomy and Astrophysics
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The apparent position of a body in the Solar System relative to the Sun, as seen from Earth. The main aspects are conjunction, greatest elongation, opposition, and quadrature.

Aspect from L. aspectus "looking, view, appearance," p.p. of aspicere "to look at," from ad- "to" + specere "to look," cognate with Gk. skeptesthai "to examine, consider," Av. spas- "to watch, look," Skt. spaz "to see, behold, look at;" PIE *spek- "to observe, look".

Nemud from nemudan "to show, demonstrate, exhibit, appear"

A series of experiments carried out in the early 1980s by Alain Aspect and his colleagues that showed the violation of → Bell's inequality. Accordingly, quantum phenomena cannot be described by the → hidden variable theories, contrarily to the → EPR paradox interpretation.

Alain Aspect (1947-); → experiment. Aspect et al., 1982, Physical Review Letters, Vol. 49, No. 25 and references therein.