This NASA time lapse video shows how the Gulf of Mexico oil rig disaster evolved from April 20, the day of the explosion, to May 24. The images were taken by the MODIS instrument in NASA's Terra and Aqua satellites.

According to NASA, the shape of the oil flood—which appears in grayish-beige in the images—changes according to weather, currents, and the use of oil dispersing chemicals.

You can access all the images here and learn more about this environmental and economic catastrophe in NASA's special page.