00:03there are currently four forces of nature in the standard model of physics including gravity
00:08electromagnetism and strong and weak nuclear interactions however experts have long theorized
00:14there's a fifth and this asteroid Bennu might just provide insights about that very force
00:19the novel force could travel on the backs of ultralight particles which are a kind of dark
00:24matter something else that is yet to be confirmed experts say the finding an invisible force of
00:28nature like this one is a lot like a ball rolling down a hill without being touched one can infer
00:33that
00:33it is moving along a decline even if you can't tell it is with just your eyes and that's what
00:38physicists are attempting to divine with long-term tracking of Bennu's orbit around the sun that data
00:42is revealing that subtle effects of forces other than gravity or the other forces of nature are
00:47actually not at play meaning that there could be a fifth force of nature one which has not been
00:51detected before but it is not having an effect on asteroid Bennu in other words they now have a new
00:57data point the force can likely not be measured in objects of Bennu's size or smaller
