Further work by Hawking in the area of arrows of time led to the 1985 publication of a paper theorising that if the no-boundary proposition were correct , then when the universe stopped expanding and eventually collapsed , time would run backwards .
[ 203 ] Further work by Hawking in the area of arrows of time led to the 1985 publication of a paper theorising that if the no-boundary proposition were correct , then when the universe stopped expanding and eventually collapsed , time would run backwards .