Tom Lapen, University of Houston (IMAGE) University of Houston Caption Tom Lapen and his colleagues' data showed that the true age of ALH84001 is about 400 million years younger than earlier age estimates. Credit Thomas Campbell Usage Restrictions Only to be used/published after embargo lift April 15 at 2pm EST. 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.