ALMA: Oph163131 disc (IMAGE) Europlanet Caption Images of the Oph163131 disc as seen by ALMA (left) and HST (right). The limits of the millimetre-sized particles in the disc observed by ALMA are outlined in white. They are concentrated in a much narrower layer than the finer (micron-sized) dust observed by the Hubble Space Telescope. Credit Credit: ALMA (ESO/NAOJ/NRAO) /Hubble/NASA/ESA /M. Villenave Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA 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.