From YahooNews
The space shuttle Atlantis and the International Space Station are separately flying around the Earth until Friday, and they can be seen as a pair of bright lights in the sky at certain times over the next few days.
Weather permitting, the orbiting objects should be visible to the naked eye throughout the United States and Canada, according toSpaceWeather.com. It’s a special opportunity to see the two largest man-made objects in the sky at once.
Atlantis undocked from the space station early Wednesday, ending a week-long stay to supply the outpost with spare parts. The shuttle is scheduled to land at Kennedy Space Center in Cape Canaveral, Fla. on Friday morning at 9:44 a.m. EST (1444 GMT).