Stream around solar system

                                                                     Imagine a speeding star plowing through the Oort Cloud surrounding our solar system and sending a stream of comets towards the Sun, a number of them smashing into Jupiter or diverted by the Jovian gravity into the inner solar system where the Earth could easily careen into them. The impacts could easily cause the kind of mass extinctions experienced by the dinosaurs. It would be sudden, brutal, and a significant percentage of the planet’s flora and fauna could be wiped out within weeks. No, this isn’t just another doomsday scenario in the spirit of the 2012 mythos, but the implications of a study which used the Hipparcos Star Catalogue to plot the motion of stars within a 98 light year radius of the Sun and found that an orange dwarf named Gliese 710 has an 86% chance of triggering the aforementioned chain of fiery and deadly events in about 1.5 million years.