Detail from SkyTruth image showing response vessels and Gulf oil slick on April 25.
We just got a detailed ALI satellite image from NASA that was shot two days ago, on April 25, when the oil slick was about 817 square miles in size (it has since more than doubled to at least 1,800 square miles). You can see several response vessels working at the periphery of the slick. The magnitude of the job they have to do is plain to see.
See more in our growing image gallery for this incident.