NASA Exoplanet Illustration (IMAGE) Georgia Institute of Technology Caption Discovering paths the chemicals of life likely took on Earth could make it possible to calculate probabilities of life on other planets. Credit Illustration: NASA/Ames/JPL-Caltech Usage Restrictions Can be used when covering research that is related to or funded by NASA Astrobiology Institute. 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.