Binary Star System

Some astronomers think that we are living in such a system. Others do not.

The outer reaches of the orbital distance are staggering. For an object with an orbit period of 27 million years, it would be 90,000 Astronomical Units away, which is 1.4 light-years, assuming a circular orbit.

For those who don't understand classical science, this is what it does: You study a phenomenon, you come up with an idea of what may cause the phenomenon and then you look for evidence that substantiates or disproves your idea. You publish your idea and let others try to verify or poke holes in it.