NEW : The debris comes within 820 feet of the space station , NASA said . NEW : The source of the object remains a mystery . Houston 's Interfax news agency said the `` trash '' came within 1,100 feet . Three minutes later , at 8:11 a.m . ET , the all-clear was sounded and astronauts were allowed to exit the capsules , Buck said . The debris was spotted `` too late to make an avoidance maneuver , '' the Johnson Space Center said .
NEW : The debris comes within 820 feet of the space station , NASA said . NEW : The source of the object remains a mystery . Houston 's Interfax news agency said the `` trash '' came within 1,100 feet . The debris was spotted `` too late to make an avoidance maneuver , '' the Johnson Space Center said .