<i>C. elegans</i> for Science (IMAGE) NASA/Johnson Space Center Caption Caenorhabditis elegans -- a millimeter-long roundworm with a genetic makeup scientists understand -- will be central to a pair of Japanese Aerospace Agency investigations into muscle and bone loss of astronauts on the International Space Station in the first few months of 2015. Credit NASA 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.