The silver amoeba shape in the lower right is the still-growing slick of oil spilling from a damaged Gulf of Mexico well at the rate of 42,000 gallons per day. The spidery green and brown patch just to the left of the oil spill is the Delta National Wildlife Refuge.

This photo was taken Sunday by NASA. Yesterday, officials told the Wall Street Journal that the oil spill is expected to reach land this Saturday, May 1. Clean-up crews are already gathering at multiple spots along the Gulf coast from Louisiana to Florida. Meanwhile, BP technicians are using underwater robots to try and stem the flow.