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No major revelations from Pentagon UFO program

An unknown object encountered by Navy fighter pilots near San Diego in 2004. Photo: U.S. Department of Defense via New York Times

The Pentagon has fessed up, and it seems that observers who accused it of hiding information about possible alien visitors were right. A New York Times report revealed that Harry Reid initiated a program to investigate the UFO phenomenon that lasted five years and cost taxpayers $22 million.

But it's hardly an unalloyed victory. The good news for those who believe the government has covered up an extraterrestrial presence is that they can retire their tinfoil hats. The bad news is that the study didn't produce unambiguous evidence that E.T. is sailing the skies in high-tech, interstellar Frisbees.

Yes, the Pentagon produced some interesting cases — mostly videos from military aircraft. But there were interesting cases before, and none ever convinced the scientists. This jury could have come in with a solid verdict, but didn't.

Why it matters: Many people have argued that the federal government is keeping secret something tremendously important: the presence of visitors from far-distant worlds. But just because the government does a study doesn't prove much of anything. Remember: The CIA also spent millions of tax dollars examining the ESP phenomenon.

Shostak is the senior astronomer at the SETI (search for extraterrestrial intelligence) Institute.