Rogue planets may be numerous in the galaxy, but it surprises most to learn that there are between 100 and 100,000 rogue planets for every star in our galaxy, putting the total number of planets wandering through the Milky Way at somewhere around a quadrillion. (NASA / JPL-Caltech)

Space Is Full Of Planets, And Most Of Them Don’t Even Have Stars

For every planet that orbits a star like our own, there are likely thousands of ‘orphan planets’ wandering the galaxy alone.

Here in the Solar System, we can watch our star’s eight planets orbit with confidence, knowing full well that we’ve discovered at least the majority…