In the context of this:
Our goal in this subsection will be to obtain $r$ as a function of $θ$, for a gravitational potential. The gravitational potential energy between two objects, of masses $M$ and $m$. In the present treatment, let us consider the mass M to be bolted down at the origin of our coordinate system. This is approximately true in the case where $M\gg m$, as in the earth-sun system.
I have seen this symbol ($\gg$ or $\ll$) multiple times in physics problems, but I have no clue what it means. I have heard that it's a limit statement of some sort, but I just want to double check how it works.