Martian Fossils On Earth: The Story of Meteorite ALH 84001

Martian Fossils On Earth: The Story of Meteorite ALH 84001 — page 9
In December as the Antarctic summer begins ANSMET scientists mount their snowmobiles and go looking for dark rocks standing out against the ice When they find one they examine it carefully If it is similar to normal Antarctic rocks they leave it alone It probably came loose from some nearby hillside It almost surely moved with the slowly flowing Antarctic ice sheet for hundreds or thousands of years until by chance it became visible in an area swept free of snow by a steady Antarctic wind