Hanukkah: History & Traditions

Lighting the menorah.
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Hanukkah, the "Festival of Lights," is a Jewish holiday lasting eight days. It is typically celebrated in late fall or early winter. It begins at sundown on the 25th of Kislev, the ninth month of the Jewish year. In 2017, Hanukkah begins on Dec. 12 and continues until Dec. 20.

Hanukkah commemorates the victory by an outnumbered army of Jews over Greek invaders in the second century B.C., according to Chabad.org. It also celebrates a miracle that occurred during the cleansing and rededication of the temple in Jerusalem: although there was only enough oil to fuel the Menorah (a candelabra used in temple services) for one day, it burned for eight days and nights.

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Rachel Ross
Live Science Contributor

Rachel Ross is a science writer and editor focusing on astronomy, Earth science, physical science and math. She holds a Bachelor of Arts in Philosophy from the University of California Davis and a Master's degree in astronomy from James Cook University. She also has a certificate in science writing from Stanford University. Prior to becoming a science writer, Rachel worked at the Las Cumbres Observatory in California, where she specialized in education and outreach, supplemented with science research and telescope operations. While studying for her undergraduate degree, Rachel also taught an introduction to astronomy lab and worked with a research astronomer.