Triton and Pluto both probably originated in the Kuiper Belt.
Indicate whether the statement is true or false
Question 2
By mass, the interstellar medium in our region of the Milky Way consists of
A) 70 Hydrogen, 30 Helium.
B) 70 Hydrogen, 28 Helium, 2 heavier elements.
C) 70 Hydrogen, 20 Helium, 10 heavier elements.
D) 50 Hydrogen, 50 Helium.
E) 50 Hydrogen, 30 Helium, 20 heavier elements.
