Wednesday, Feb. 25, 2009 | 4:21 p.m.
For the curious who want to know the latest about Area 51, the top secret desert base about 90 miles northwest of Las Vegas, an hour-long episode of "UFO Hunters: Area 51 Revealed" airs tonight at 10 p.m. On the History Channel, Cox Cable TV Channel 43 in Las Vegas.
This episode is the first substantial new Area 51 show in nearly a decade, says Glenn Campbell, an expert who tracked activities at the world's "infamous secret base," as the History Channel promo says.
Area 51, also known as Groom Lake, is growing, Campbell reports. Satellite photos reveal new buildings, towers and runways. Secret flights with blacked-out windows fly between Area 51 and Las Vegas.
The federal government denied for years that the base existed on land next to the Nevada Test Site, where U.S. Defense Department officials and others experimented with nuclear weapons from 1951 to 1992, until satellite photos began to reveal its scope.
The UFO hunters head for the heart of the secret base and its military conspiracy theories, Campbell promises.