The huge expanse of the Pacific Ocean gives rise to myriad cloud forms. In these true-color <a HREF="http://modis.gsfc.nasa.gov" target="outlink">Moderate Resolution Imaging Spectroradiometer</a> (MODIS) images to very different cloud patterns are seen. One shows ship tracks (clouds that form around the emissions or exhaust from ships); the other shows a large stratocumulus cloud deck. Sensor: Terra/MODIS. Data Start Date: 10/27/02. Data End Date: 10/27/02.