Honeycombulus (IMAGE) DOE/Pacific Northwest National Laboratory Caption Marine stratocumulus clouds have open cells (sky in the middle) and closed cells (cloudy in the middle). Credit Jeff Schmaltz, NASA http://earthobservatory.nasa.gov/IOTD/view.php?id=43795 Usage Restrictions Credit NASA 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.