HomeAlpha Centauri Particles Already Lurk in Our Solar System, Study Suggests – ScienceAlert Alpha Centauri Particles Already Lurk in Our Solar System, Study Suggests – ScienceAlertAustralia Alpha Centauri Particles Already Lurk in Our Solar System, Study Suggests ScienceAlert Interstellar visitors: Material from Alpha Centauri may already be here Phys.org