***No Aliens***
Nearest galaxy is 2 million years away
Deem, Researcher/Specialist at Cedars-Sinai Medical Center. 6 (Rich, Aug 25, “UFO's and Extraterrestrial Aliens: Why Earth Has Never Been Visited”, http://www.godandscience.org/apologetics/ufo.html)
Have we been visited by extraterrestrial beings from elsewhere in the universe? First, I would like to eliminate the idea that we have been visited by beings located outside our own galaxy. Andromeda, the nearest galaxy to the Milky Way is 2 million light years distant. This means that if there were aliens in Andromeda, it would take them longer than 2 million years to come to earth.1 Another problem is why they would want to visit our galaxy. The Andromeda galaxy is considerably larger than our galaxy. If life were common in the universe, there should be many times more of it in Andromeda, than in our wimpy galaxy. Why would they even want to visit us? A third problem for potential aliens is detecting us. We have been sending radio waves for less than 100 years. It will be another 2 million years before those signals reach our closest neighboring galaxy. The light (and other electromagnetic signals) that they now see represent the way the earth looked 2 million years ago. Beings in other galaxies would have no way of knowing that advanced life forms existed in our galaxy.
No physical evidence
Deem, Researcher/Specialist at Cedars-Sinai Medical Center. 6 (Rich, Aug 25, “UFO's and Extraterrestrial Aliens: Why Earth Has Never Been Visited”, http://www.godandscience.org/apologetics/ufo.html
UFO believers would ask about Roswell, UFO sightings and alien abductions. The problem I have with the whole Roswell/government conspiracy thing is that there is not one piece of physical evidence. The government has never been able to keep any kinds of secrets - much less over a period of 40 years. Regarding abductions, none of the people involved have been shown to have any signs of tampering, which would be readily apparent by MRI.
No Aliens
Probability is virtually zero
Deem, Researcher/Specialist at Cedars-Sinai Medical Center. 6 (Rich, Aug 25, “UFO's and Extraterrestrial Aliens: Why Earth Has Never Been Visited”, http://www.godandscience.org/apologetics/ufo.html
This paper has shown that the probability of aliens visiting the earth is virtually zero. Potential aliens in other galaxies are too far away to detect our presence (since radio signals will not reach them for millions of years) and the travel times make intergalactic travel impractical. Recent scientific studies demonstrate that the universe is much less hospitable to life than it would seem from our unique Solar System and planet. A large proportion of our galaxy is uninhabitable. Parts of it would not even be expected to produce rocky planets. The highly unlikely collision that produced our large moon prevented the earth from being a waterworld.5 It also ejected the majority of our primordial atmosphere, which prevented the earth from going through a runaway greenhouse effect similar to what happened to Venus, our sister planet. Finally, our Solar System is unique in that it has large gas giants located only in the outer regions. Other systems discovered have gas giants located either near their star or in both inner and outer regions of their planetary system. The presence of gas giants near the star would eject any rocky planets from orbit. The presence of gas giants in the outer region of planetary systems is absolutely necessary for the survival of advanced life forms. Without Jupiter, the number of catastrophic collisions that the earth would experience would be at least 10,000 times greater. So instead of suffering massive species extinction events every 100 million years, the earth would experience these events every 10,000 years.6 Only bacteria and other simple life forms would be able to survive this kind of bombardment - no advanced life could ever form in the vast majority of planetary systems. These problems indicate that there would be no more than 150 advanced civilizations within our galaxy - and, more likely, we are completely alone in our galaxy.
Interstellar space travel is much more difficult than indicated in movies and television series, such as Star Trek and Star Wars and the like. First, it is not possible to travel at speeds greater than the speed of light - the physics of the universe prevent it. Second, traveling near the speed of light is impractical for biological organisms. Collisions with particles even the size of a grain of sand would be catastrophic. An even worse problem is that the light from ordinary stars would be blue-shifted all the way to the gamma end of the spectrum when traveling near the speed of light. These gamma rays would destroy all biological life - even if it were in suspended animation (if that were possible). In essence, these problems would restrict the speed of travel to well below the speed of light. The most optimistic estimate for the presence of extraterrestrial civilizations would put them 2000 light years apart. With no intermediate habitable stopping points, space travel over this distance would be impractical. So, even if we are not alone in this galaxy, it would be highly unlikely that any extraterrestrial civilization could have visited us. What about all the "evidence" for extraterrestrials and UFOs? See the links below for more information.
No Area 51 Aliens
Area 51 employees break silence – no aliens or UFOs
Lacitis, Seattle Times staff reporter, 10 (Erik, March 27, “Area 51 vets break silence: Sorry, but no space aliens or UFOs “< http://seattletimes.nwsource.com/html/localnews/2011461015_area51vets28m.html)
The secrets, some of them, have been declassified.
Noce, 72, and his fellow Area 51 veterans around the country now are free to talk about doing contract work for the CIA in the 1960s and '70s at the arid, isolated Southern Nevada government testing site.
Their stories shed some light on a site shrouded in mystery; classified projects still are going on there. It's not a big leap from warding off the curious 40 or 50 years ago, to warding off the curious who now make the drive to Area 51.
The veterans' stories provide a glimpse of real-life government covert operations, with their everyday routines and moments of excitement.
Noce didn't seek out publicity. But when contacted, he was glad to tell what it was like.
"I was sworn to secrecy for 47 years. I couldn't talk about it," he says.
In the 1960s, Area 51 was the test site for the A-12 and its successor, the SR-71 Blackbird, a secret spy plane that broke records at documented speeds that still have been unmatched. The CIA says it reached Mach 3.29 (about 2,200 mph) at 90,000 feet.
But after September 2007, when the CIA displayed an A-12 in front of its Langley, Va., headquarters as part of the agency's 60th birthday, much of the secrecy of those days at Area 51 fell away.
Advance warning to UFOlogists: Sorry, although Noce and other Area 51 vets say they saw plenty of secret stuff, none make claims about aliens.
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