The Milky Way may be swarming with planets with oceans and continents like here on Earth (image) University of Copenhagen - The Faculty of Health and Medical Sciences Share Print E-Mail Caption 'All planets in the Milky Way may be formed by the same building blocks, meaning that planets with the same amount of water and carbon as Earth', says Professor Anders Johansen. Credit NASA, ESA and G. Bacon (STScI). Usage Restrictions None Share Print E-Mail 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.