What is the Moon's gravity?
a. There is no gravity on the Moon.
b. 1/3 of Earth's gravity
c. 1/2 of Earth's gravity
d. 1/6 of Earth's gravity
e. The Moon's gravity is the same as that of Earth.
Question 2
The collapse of the iron core of an isolated massive star produces a type II supernova.
a. True
b. False
Indicate whether the statement is true or false
