'Mysterious Object' May Be First 'Extinct' Meteorite

A newly uncovered meteorite may be the first-ever "extinct" meteorite — a member of a class of meteorite that no longer falls to Earth. The ancient rock may yield insights on a cosmic impact that created most of the meteorites that now crash on Earth, and which may have influenced the evolution of life on Earth, researchers said. The most common meteorites on Earth, which make up about 85 percent of the rocks that fall onto this planet from space, are known as ordinary chondrites