Sun's galactic journey linked to mass extinctions Oct 4, 2013 10:15:30 GMT Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by Pincho Paxton on Oct 4, 2013 10:15:30 GMT Here's the link...Sun's galactic journey linked to mass extinctionsSpace can change, it has substance, it has a fabric, and the physics around the sun are calm, but not that calm.