KUALA LUMPUR, Malaysia -- The search for a missing Malaysia Airlines flight intensified Thursday in the remote waters of the southern Indian Ocean after a Colorado company discovered that its satellite had captured images of two whitish objects floating in the ocean.
The photos of what officials say may be airplane debris surfaced when DigitalGlobe reviewed grainy images that its commercial satellite had collected in the days after Malaysia Airlines Flight MH370 disappeared. That heightened scrutiny came when the United Nations called on an international consortium of space agencies and satellite companies to scan the oceans for clues to the whereabouts of the missing Boeing 777.
Dozens of ships and aircraft have been dispatched to an area about 1,500 miles southwest of Perth, Australia. A Norwegian cargo vessel that was already in the vicinity arrived at the location and used its searchlights to scan the waters before dawn. Four military airplanes, including a U.S. surveillance aircraft, also searched the area amid poor visibility and were to resume their hunt at daybreak today.
The search has failed to find any other possible signs of the downed airplane, which vanished March 8 en route from Kuala Lumpur to Beijing with 239 passengers and crew on board. Locating those pieces in the 230,000-square-mile search area will be challenging, and if they are parts of the plane, finding the rest of it may be even more difficult.
"If they are plane parts, they are probably several hundred miles away by now from the impact site," said Robert Benzon, who spent 27 years as a National Transportation Safety Board lead crash investigator. "Trying to trace back the currents to a specific location after all this time is going to be very, very difficult."
The images taken by Digital Globe's WorldView-2 satellite were taken Sunday. They show one object that is about 80 feet long and another one that measures 15 feet.
"The search area expanded to the southern Indian Ocean region and waters near Australia only in the last few days, at which time the Australian government started combing through imagery of this extremely large area," DigitalGlobe said in a statement. "No conclusions have been reached about the origins of the debris or objects shown in the imagery."
The company said it took four days to comb through all the data before information could be released by the Australians. DigitalGlobe said its five satellites capture more than 1.1 million square miles of Earth images every day, too much material to review in real time without clues of where to look.
To help find Flight MH370, the United Nations activated the international consortium. The Space-based Information for Disaster Management and Emergency Response, known as UN-SPIDER, is a collection of space agencies and commercial satellite companies, including the one that spotted the objects off the coast of Australia.
Normally, UN-SPIDER is activated following floods, earthquakes, volcano eruptions and other natural disasters. This is the first time since UN-SPIDER was formed in 2012 that its members have been mobilized to find a missing airplane, according to the UN-SPIDER Web site.
Malaysian Defense Minister Hishammuddin Hussein said the images need to be assessed by experts. Australian Air Commodore John McGarry said further information is being continuously collected as other satellites pass over the area.
"The task of analyzing imagery is quite difficult; it requires drawing down frames and going through frame by frame," Commodore McGarry said. "The moment this imagery was discovered to reveal a possible object that might indicate a debris field, we have passed the information" for action by the Australian Maritime Safety Authority.
Malaysian investigators have said it is likely that the plane was deliberately steered off its course toward Beijing by somebody, which has led to scrutiny of the plane's pilot and co-pilot.
The southern Indian Ocean would be a bewildering destination for a hijacker. It also seemed an unlikely destination for a pilot bent on suicide, as others have suggested.
But the suspicion that the plane flew into that remote area of the ocean renewed the possibility that it was operating on autopilot after the crew and passengers were incapacitated by a system failure, a fire or a hijacking gone awry, U.S. experts said. They said it is possible that the plane continued on autopilot for hours with its crew and passengers no longer alive.
Mr. Benzon, who has investigated crashes in Borneo, Afghanistan, Honduras, China, Russia and Scotland, said a fire or depressurization might explain the plane's abrupt deviation from its scheduled route. "It seems like most of the world thinks that there's something nefarious going on, and in the end, it could very well be," he said. "But I haven't heard a lot of conversation about a bona fide in-flight emergency that might have partially incapacitated the crew, and then the crew initiates this grand turn to the left to try to get back to land."
The tail of a Boeing 777-200 is 60 feet high; the plane is 209 feet long; and the wing span is 199 feet.
"The indication to me is of objects that are a reasonable size and probably awash with water, bobbing up and down on the surface," John Young, general manager of the Australian Maritime Safety Authority, said at a news conference in Canberra.