sentences:  The earliest discovered historical record of what is known as the saros is by Chaldean (neo-Babylonian) astronomers in the last several centuries BC.It was later known to Hipparchus, Pliny and Ptolemy.The name "saros" () was applied to the eclipse cycle by Edmond Halley in 1691, who took it from the "Suda", a Byzantine lexicon of the 11th century.