Richard Hoagland claims that NASA refuses to acknowledge evidence of alien "artifacts" on Mars.
(SPACE.com) -- Astronomer Philip Plait is tired of radio personality Richard Hoagland's claims.
He's had enough of Hoagland's assertions that NASA is covering up evidence of extraterrestrial life, that the infamous Face on Mars was built by sentient aliens and, of late, that otherworldly machine parts are embedded in the Red Planet's dirt.
And then there's the mile-long translucent martian worm.
On Hoagland's Web site, there are several images from various space probes said to possibly show evidence for ETs. Recent Mars rover photos include not just rocks, Hoagland and other contributors maintain, but common objects that might tell of an alien civilization -- a bowl, a stove, a piston.
Since 1983, Hoagland said he has led "an outside scientific team in a critically acclaimed independent analysis of possible intelligently-designed artifacts" on other worlds, using spacecraft data from NASA and other missions.
Plait, author of "Bad Astronomy" (Wiley & Sons, 2002), which debunks space myths and common factual misconceptions, had for years not countered Hoagland directly, because he did not want to give a man he calls a "pseudoscientist" the "air time that he so desperately seeks."
But last week Plait took his intellectual gloves off....
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