SEGMENTED OBJECT (above, left) is 380 nanometers in length and was found in a carbonate globule in meteorite ALH84001. The minute structure resembles fossilized bacteria, or microfossils, found on Earth. For example, the vertically oriented object to the right in the right-hand photograph is believed to be a microfossil. The object, which is also 380 nanometers long, was found 400 meters below Earth's surface (in Washington State) in a type of geologic formation known as Columbia River Basalt.