Oil spill: Gulf of Mexico spill has been seen by a NASA satellite as the slick expands from the site of last week's Deepwater Horizon oil rig explosion.
The oil slick that is expanding from the site of an oil rig collapse last week has been spotted from space by a NASA satellite.
An estimated 42,000 gallons of oil per day are leaking from an oil well in the Gulf of Mexico after an oil rig caught fire and then sank into the ocean waters last week.
The only oil evident in the water at first was that which had been on the rig itself at the time it exploded on April 20. Over the weekend, officials working on the oil spill discovered that water was also leaking from the pipe that led up to the rig from the well some 5,000 feet (1,524 meters) below on the seafloor.
NASA's Aqua satellite took a photograph of the affected area on Sunday, April 25, in which the oil slick — which currently covers an area 48 miles long (77 kilometers) and 39 miles wide (63 km), according to news reports — can be seen.