WONDER #1666: Why Are There Seven Days in a Week?

Question 1 of 3

Historians believe the seven-day week dates back to which ancient civilization?

1. Greek
2. Roman
3. Babylonian
4. American

Question 2 of 3

Roman Emperor Constantine formally adopted the seven-day week in what year?

1. 321
2. 550
3. 775
4. 1492

Question 3 of 3

Which of the following was NOT one of the seven heavenly bodies revered by the Babylonians?

1. Sun
2. Moon
3. Mars
4. Pluto

Check your answers online at https://www.wonderopolis.org/wonder/Why-Are-There-Seven-Days-in-a-Week.