Did this Pebble Arrive from Outer Space? (IMAGE) University of Johannesburg Caption Researchers Jan Kramers and Georgy Belyanin found mineral compounds unlike anything on Earth, or in known meteorites or comets, in these fragments from the Hypatia stone, which was picked up in south-west Egypt in the Libyan Desert Glass Field. Credit Dr Mario di Martino, INAF Osservatorio Astrofysico di Torino Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.