by Claudine Zap The celebration of the Jewish New Year begins sundown on Wednesday. And that means scores of people are heading to the Web for information on the holiday. Keep in mind we're not Jewish scholars, but we are Buzz-ologists. Here, a roundup of popular questions about the holiday on Yahoo!. What is Rosh Hashanah? No fireworks or party hats, but this start of the High Holy Days celebrates the Jewish New Year. Rosh Hashanah means "start of the year" in Hebrew.