The Roche limit is the point at which:
A) the mass of an object classifies it as a moon.
B) a moon orbiting a planet experiences synchronous rotation.
C) the external tidal forces on an object are strong enough to be felt by the object.
D) the external tidal forces on an object become greater than the internal forces that hold it together.
E) the internal forces that hold an object together weaken so that the object falls apart.
Question 2
Gas that has never been cycled through a galaxy or a star is said to be ________.
Fill in the blank(s) with correct word