The Solar System Is Even More Massive Than You Think

Our solar system got a little smaller when planethood was yanked out from underneath Pluto and it was demoted to a dwarf planet. But that’s only if your definition of a solar system is limited to the number of planets orbiting a star.

As NASA’s Goddard Space Flight Center points out in a new video, the size of our solar system depends on how you are observing it. If you go by the distance of the farthest planet, Neptune lies almost 3 billion miles away from the sun.