It's rare for a newspaper story to emerge 
                  from the vast and dark unknown and hit at a primal level, 
                  tapping into the fact that many of us feel so alone and 
                  confused about why we exist, and giving us a chance to hope, 
                  to dream.
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                  Admittedly, those big thoughts were not on my 
                  mind when the director of a UFO-watching group first called to 
                  offer an exclusive Chicago angle on what might be the biggest 
                  story of all humankind--a visit by an alien 
                  spaceship.
No, ET had not phoned home. But, said Peter 
                  Davenport of the National UFO Reporting Center, this was "an 
                  excellent, stunning case involving a genuine UFO from some 
                  other part of our galaxy or our universe."
We've all 
                  read similar reports--and then put them back on the 
                  shelf--while waiting in the supermarket checkout line. I 
                  recall one tabloid front page announcing that aliens had 
                  abducted Newt Gingrich. Not surprisingly, they gave Newt 
                  back.
Covering UFOs seemed to be stretching the 
                  definition of my job, transportation reporting. I looked at 
                  the clock on the newsroom wall and decided to give Mr. 
                  Davenport two minutes. But he was onto something.
The 
                  UFO story, published Monday, became the most-read piece to 
                  appear on chicagotribune.com. It was the top story on the 
                  Tribune Web site for four straight days, garnering more than 1 
                  million page views from people around the world.
The 
                  reaction is proof that we live in a curious world. Maybe a 
                  curious universe too.
It turns conventional notions 
                  about what people want to read and hear about on their head. 
                  And it lays bare the reality that huge numbers of people 
                  explicitly mistrust the government, the military establishment 
                  and the aerospace industry when it comes to UFO sightings and 
                  research.
In our first of many phone conversations, 
                  Davenport assured me that highly credible individuals spotted 
                  a flying saucerlike object Nov. 7, and that it hovered over a 
                  major site on my Tribune beat: O'Hare International 
                  Airport.
So I interviewed the witnesses and tracked 
                  down some additional observers--pilots, ramp workers, 
                  mechanics and management officials at United 
                  Airlines.
They were all dead serious about what they 
                  saw, and the accounts--whether made from the tarmac or from 25 
                  feet up in the cockpit of a Boeing 777--were 
                  consistent.
The unidentified aerial phenomenon was dark 
                  gray and shaped like a disc, it hovered in a fixed position 
                  above Concourse C of the United Airlines terminal, and it 
                  vanished with a burst of energy that cut a hole in the 
                  overcast skies.
The fact that officials at United 
                  Airlines and the Federal Aviation Administration initially 
                  denied any knowledge of the incident--despite evidence I had 
                  that they were well aware of it--made the story even more 
                  appealing.
Little did any of us know.
News 
                  organizations from a low-watt radio station in Delaware to a 
                  TV station in Australia phoned me to request interviews. Jay 
                  Leno cracked jokes on the "Tonight Show" about inebriated 
                  workers at O'Hare.
Ufologists contacted me in droves 
                  with thanks for treating the subject in a serious manner and 
                  congratulated the Tribune, as a leading member of the 
                  mainstream media, for publishing a story about an 
                  extraterrestrial sighting.
The reaction is perplexing 
                  and somewhat discouraging. But clearly it speaks to the 
                  persistent fascination with the possibility that we're not 
                  alone in the universe, and there are mysteries of our 
                  existence still to be unraveled.
Dominique 
                  Callimanopulos understands why the UFO story is so 
                  seductive.
"When I was doing UFO research, I found that 
                  the sightings hit most people in a very child-wonder place," 
                  Callimanopulos said. She assisted the late Dr. John Mack, who 
                  became infamous at Harvard Medical School for researching UFO 
                  and alien encounters.
"People think this visit will be 
                  some sort of answer or salvation, that beings from another 
                  world will be able to help us solve the mess we've made on 
                  this planet," said Callimanopulos, a board member of the John 
                  E. Mack Institute, founded in honor of the Pulitzer 
                  Prize-winning physician.
"Everyone at some deep level 
                  does wonder why we are here. That is why there are so many 
                  religions in the world and conflicting belief systems," she 
                  said. "If we were to find our cosmic friends, we would have a 
                  real family, finally."
It would be nice if physical 
                  evidence existed to substantiate the claims made at O'Hare on 
                  Nov. 7. Airport surveillance cameras are trained on the 
                  airfield, not the heavens, and FAA radar has so far turned up 
                  nothing unusual.
How is it that someone smuggled a 
                  camera cell phone into a Baghdad execution chamber to 
                  chronicle the hanging of former Iraqi dictator Saddam Hussein 
                  last month, but no one among the thousands of airport workers 
                  and travelers at O'Hare snapped a picture for the cosmic 
                  family photo album?
The answer, along with an 
                  explanation about how the universe works, remains a mystery. 
                  We earthlings possess inquisitive minds, but we are, after 
                  all, only 
                  human.
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jhilkevitch@tribune.com