Meteor crater
Meteor Crater, also known as the Barringer Meteorite Crater, located near Winslow, Arizona, USA. The crater was made 49 000 years ago when a 10 000 000-tonne meteor impact dislodged 300 000 000 tonnes of rock. This classic photo of Meteor Crater was taken by David Roddy of the United States Geological Survey.

Mars meteorite ALH 84001
This Martian meteorite is thought by some scientists to contain evidence of life on Mars. The rock is designated ALH84001, after the Allan Hills in Antarctica where it was found. Courtesy of NASA/JSC.