A NASA satellite took this image of the Gulf of Mexico on Sunday, showing the massive oil slick generated by the explosion and subsequent sinking of the Deepwater Horizon drilling platform last week.
NASA writes: "The oil slick may be particularly obvious because it is occurring in the sunglint area, where the mirror-like reflection of the Sun off the water gives the Gulf of Mexico a washed-out look. Oil slicks are notoriously difficult to spot in natural-color (photo-like) satellite imagery because a thin sheen of oil only slightly darkens the already dark blue background of the ocean. Under unique viewing conditions, oil slicks can become visible in photo-like images, but usually, radar imagery is needed to clearly see a spill from space."