This image 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 km west of Alice Springs. It is one of the most studied of the Australian impact craters. The impactor, an asteroid or comet, was probably about 1 km in diameter and crashed into the earth about 142 million years ago.
Usually the lake within Pingualuit Crater freezes by mid-September. In 2012, its circular blue surface still appeared to be free of ice in late-November.
Pingualuit Crater holds a lake about 267 meters (876 feet) deep. Because this lake has no connection to any other water body, inflows from other lakes cannot contaminate Pingualuit’s sediments.
Acquired October 10, 2007, this false-color image shows Chiyli Crater in western Kazakhstan. Vegetation appears red, and clings primarily to riverbanks near the crater. Sunlight illuminates south-facing slopes, including the central peak of the crater.
When the Apollo 11 astronauts left the surface of the Moon on July 21, 1969, they brought home samples of solar wind particles, lunar rocks and dirt, and a big helping of perspective.
Acquired December 3, 2010, this natural-color image shows Tin Bider Crater in Algeria. Spanning 6 kilometers, the crater rises above nearby land to the south.