The original Temple menorah had seven candles, to reflect seven days of God's creation of the world, plus the day of rest. The extra candle is used to light the candles.
Some of the Menorahs today, have the eighth candle in the middle, like the picture shows..for lighting the other candles.
Be sure to read the story of how this wonderful holiday came about..
Wishing all Our Jewish friends..A Happy Hanukkah..
Till next time, keep looking up.