Our Oort cloud of cometary objects is 1 light year away; "http://http://en.wikipedia.org/wiki/Ort_cloud" [Broken] Each such star is about 1 lyr apart. Assume for simplicity that such stars were of 1 solar mass (actually 10-20 solar mass), then in principle any supposed respective cometary clouds would overlap. What distribution of comet objects would one have? Reducing 3-body problem to 2-body, gives Lagrange Points. "http://http://en.wikipedia.org/wiki/Lagrange_points" [Broken] So might a planetesimal of cometary objects aggregate at such points for close stars? Would an infrared telescope be able to test such a model?