An Australian search aircraft spotted two objects in the southern Indian Ocean that could be related to the missing Malaysia Airlines Flight 370, a development authorities called "the best lead we have," NBC News reported. The objects are "relatively indistinct," but the larger of the two appears to be about 75 feet across, according to John Young, emergency response general manager for the Australian Maritime Safety Authority. They were spotted in satellite imagery taken on Sunday about 1,400 miles off the coast of Perth. Young also said that more analysis was needed before it could be determined whether the objects were, indeed, from the aircraft. "The task of locating these objects will be extremely difficult, and it may turn out that they may not be related," he said, but he described the discovery as "new and credible information" in the search for the Beijing-bound plane, which disappeared March 8 after takeoff from Kuala Lumpur.