It's time to reassess the size of our solar system, scientists say

Two leading space scientists say there is a need to redefine the edge of the solar system by presenting a theory which states that measurements of the Milky Way's gravitational field, including its dark matter, redraws the sun's frontier. That theory was put forward by Jim Green, former NASA chief scientist and past director of the space agency's Planetary Science Division, along with Ed Belbruno, a professor of mathematics at Yeshiva University and a senior research associate at Princeton Unive