Star signs have been around since the dawn of man. The study of Western Astrology and the belief in it, as part of astronomy, is first found in a developed form among the ancient Babylonians; and directly or indirectly through the Babylonians, it spread to other nations. It came to Greece about the middle of the 4th century B.C., reached Rome before the advent of the Christian era.
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me
A person
in 1920
It was invented, not discovered.
Patrick tamer bowie invented led signs in 1979
Robert Yeaman in 1345
And was Created By William Phelps EnoSources-http://www.ehow.com/facts_5003094_who-invented-stop-sign.html
neon signs was in vented before the era of electricity in year 1675 by french astronomer Jean Picard
plus and minus signs were invented
Arthur Wellesley
Micheal Corn
Abner Singleday and Abner Tripleday, cousins of Abner Doubleday.