What Is Helium Rain

Multiple Choice

What is helium rain?

A) In Jupiter's large gravitational field, helium is condensed to liquid and falls until it becomes liquid metallic hydrogen.
B) Titan's thick atmosphere produces condensed helium that falls like rain.
C) The cold temperatures in Saturn's atmosphere cause helium to condense and to fall toward the interior like rain.
D) Helium gas from Jupiter is conducted along the intense magnetic field lines to fall as rain on Europa. Europa is colder because it does not have the internal heating experienced by Jupiter.