White Dwarf and its Companion (IMAGE) European Space Agency Caption This is an illustration of the white dwarf and its companion HD49798. If it was possible to look at the system up-close, it would look something like this. Credit Francesco Mereghetti, background image: NASA, ESA and T.M. Brown (STScI) Usage Restrictions Only with the full credit line provided with the image. 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.