oh wow!!! wonder what it is thats scary huh.

Mission Control notified the astronauts of the observation at 9 a.m. CDT, and asked them to delay plans to stow a video antenna.
Peterson said the request would allow the astronauts to make an unscheduled examination of the shuttle using cameras on Atlantis' robot arm. The antenna would transmit the views to Mission Control.
However, it was not clear whether the survey could take place later today or Wednesday.
If the survey was scheduled for Wednesday, NASA would postpone the shuttle's planned landing at the Kennedy Space Center in Florida.
Unknown object seen flying below Atlantis