Jupiter doesn’t Shield Earrh from Comets

  • “Jupiter as shield” concept, implying that the planet shields Earth from comet impacts, is incorrect, says a new study published in the journal Astrobiology .
  • Kevin Grazier  at the NASA Jet Propulsion Laboratory, describes the study in which he simulated the evolution of tens of thousands of particles in the gaps between the jovian planets for up to 100 million years. Based on the results, Dr. Grazier concludes that the widely reported shield role attributed to Jupiter is incorrect.