'Ninth Planet' May Exist in Solar System: US Scientists
A previously unknown giant planet may have been discovered lurking in the outer reaches of our solar system, US scientists announced. Nicknamed Planet Nine, the object "has a mass about 10 times that of Earth" and follows a "bizarre, highly elongated orbit in the distant solar system," said a statement by researchers at the California Institute of Technology (Caltech). (Video Courtesy: Caltech AMT/AFPTV)
