Possible Captured Planets Found in Oort Cloud

A new study published in the Monthly Notices of the Royal Astronomy Society suggests that up to 10% of a star's original planets could be cast adrift into deep space, and there is about a 7% chance that our solar system has a captured ice giant planet in the Oort cloud. The study shows that planetary systems don't always form in isolation, and there are plenty of star systems that are likely blended families.