A recently-discovered photograph has unleashed new theories about one of the biggest mysteries of the last century. But experts told WUSA9 don’t buy all the buzz.

“We need more,” says Dorothy Cochrane of the Smithsonian National Air & Space Museum. She has been studying pioneering female pilot Amelia Earhart—and her disappearance—for decades.

On Sunday, a History Channel special will focus on the end of Earhart's story. Along with navigator Fred Noonan, Earhart disappeared July 2, 1937 trying to fly around the world. Investigators say this just-found photo proves Lady Lindy lived.

RELATED: New photo may prove Amelia Earhart was captured by the Japanese

Investigators insist one man in the photo is navigator Noonan based on his hairline. They think a person facing away from the camera might be a short-haired woman, maybe Earhart.

"It's a chapter, it's a page in the search," said Cochrane. "But I certainly don't think it's definitive evidence."

Cochrane believes Earhart ditched in the deep Pacific Ocean. She wants the pioneering pilot honored with history, not hype.