Question

Which was not an accomplishment of Galileo Galilei?

A. producing a precise astronomical calendar

B. creating a powerful telescope

C. confirming that the earth revolves around the sun

D. discovering moons orbiting Jupiter

Answer 1

A. Producing a precise astronomical calendar was not an accomplishment of Galileo's

Answer 2

A. producing a precise astronomical calendar
Galileo did all of the rest. Although he was an astronomer, he did not create a precise astronomical calendar.

Hope this helps :)