Australian impact crater taken by the Expedition Seven crew

ISS007-E-05697 (20 May 2003) --- This image, photographed by an Expedition 7 crewmember onboard the International Space Station (ISS), shows Gosses Bluff, an impact crater sandwiched between the MacDonnell Range to the north and the James Range to the south in Australia�s Northern Territory � it is about 160 kilometers west of Alice Springs. It is one of the most studied of the Australian impact craters. The impactor, an asteroid or comet, was, according to scientists, probably about 1 kilometer in diameter and crashed into the Earth about 142 million years ago. The isolated circular feature within the crater consists of a central ring of hills about 4.5 kilometers in diameter. The grayish feature surrounding the inner ring probably marks the original boundary of the outer rim.