Exoplanets (IMAGE) Technical University of Denmark Caption After detecting the first exoplanets in the 1990s it has become clear that planets around other stars are the rule rather than the exception and there are likely hundreds of billions of exoplanets in the Milky Way alone. The search for these planets is now a large field of astronomy. Credit ESA/Hubble/ESO/M. Kornmesser Usage Restrictions Credit: ESA/Hubble/ESO/M. Kornmesser 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.