29-mn-yr-old glass found in Egypt made by meteorite impact: Study

Australia-based researchers have discovered that 29-million-year-old green-yellowish 'Libyan Desert Glass' found in Egypt was made by a meteorite impact. This contradicts past beliefs that it was formed after an asteroid exploded in Earth's atmosphere. Presence of mineral called reidite, which forms only under high pressure, helped turn down the asteroid-explosion theory, researchers said.