Oumuamua (Artist's Impression) (IMAGE) University of Hawaii at Manoa Caption This artist's impression shows the first interstellar object discovered in the Solar System, Oumuamua. Observations made with the NASA/ESA Hubble Space Telescope and others show that the object is moving faster than predicted while leaving the Solar System. Researchers assume that venting material from its surface due to solar heating is responsible for this behavior. This outgassing can be seen in this artist's impression as a subtle cloud being ejected from the side of the object facing the Sun. As outgassing is a behavior typical for comets, the team thinks that Oumuamua's previous classification as an interstellar asteroid has to be corrected. Credit ESA/Hubble, NASA, ESO, M. Kornmesser 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.