Are we alone? Unfortunately, none of the answers seems satisfactory.
Being alone in this vast universe is a solitary perspective. On the other hand, if we are not alone and there is someone or something more powerful out there, that is also scary.
As a NASA research scientist and now a physics professor, I attended the 2002 NASA Contact Conference, which focused on serious speculation about aliens, reports The Conversation.
During the meeting, a concerned participant said loudly with a sinister tone: "He has absolutely no idea what is out there!" The silence was palpable as the truth of this statement sank. Humans fear that aliens will visit Earth.
Perhaps fortunately, the distances between the stars are prohibitively vast. At least this is what the novices, who are learning to travel to space, tell ourselves.
I've always been interested in UFOs. Of course, there was the excitement that there might be extraterrestrials and other living worlds. But more exciting to me was the possibility that interstellar travel was technologically achievable.
In 1988, during my second week of graduate work at Montana State University, several students and I were discussing a recent mutilation of cattle badociated with UFOs.  A physics professor joined the conversation and told us that he had colleagues working at Malmstrom Air Force Base in Great Falls, Montana, where they had problems with UFOs to close nuclear missiles.
At that time I thought that this teacher was saying nonsense. But 20 years later, I was surprised to see a recording of a press conference in which several former members of the US Air Force staff appeared. UU., With a couple of Malmstrom AFB, describing similar events in the 1960s. Clearly there must be something in this.
Since July 2 is World UFO Day, it is a good time for society to address the disturbing and refreshing fact that we can not be alone.
I think we should face the possibility that some of the strange flying objects that outnumber the best planes in our inventory and challenge the explanation may be visitors from afar, and there is a lot of evidence to support UFO sightings.
THE PARADOX FERMI
The nuclear physicist Enrico Fermi was famous for asking thought-provoking questions.
In 1950, at Los Alamos National Laboratory after discussing UFOs during lunch, Fermi asked: "Where is everyone?" He estimated that there were around 300 billion stars in the galaxy, many of them billions of years older than the sun, with a large percentage of them that could harbor habitable planets.
Even if intelligent life developed on a very small percentage of these planets, then there should be a series of intelligent civilizations in the galaxy. Depending on the badumptions, one should wait between tens and tens of thousands of civilizations.
With the rocket-based technologies that we have developed for space travel, it would take between 5 and 50 million years for a civilization like ours to colonize our Milky Way galaxy.
Since this should have happened several times in the history of our galaxy, one should ask where is the evidence of these civilizations. This discrepancy between the expectation that there should be evidence of civilizations or extraterrestrial visits and the presumption that no visits have been observed has been called the Fermi paradox.
Carl Sagan correctly summarized the situation saying that "extraordinary claims require extraordinary evidence". The problem is that there has not been a single well-documented encounter with UFOs that would qualify as the smoking gun.
The situation is aggravated by the fact that many governments around the world have hidden and clbadified information about such encounters. But there are enough pieces of evidence that suggest that the problem needs to be open to scientific study.
UFOS, TABOO FOR PROFESSIONAL SCIENTISTS
When it comes to science, the scientific method requires that hypotheses be verifiable so that inferences can be verified UFO encounters are not controllable or repeatable, which makes their study extremely challenging But the real problem, in my opinion, is that the UFO theme is taboo.
While the general public has been fascinated with UFOs for decades, our governments, scientists and the media have essentially stated that all UFO sightings are a result of weather phenomena or human actions.
None is actually an extraterrestrial spaceship. And no extraterrestrial has visited the Earth. Basically, we are told that the subject does not make sense.
UFOs are beyond the scope of serious scientific study and rational discussion, which unfortunately leaves the subject in the domain of the marginalized and pseudoscientific, many of whom are in the field of conspiracy theories and wild speculation .
I believe that UFO skepticism has become a kind of religion with an agenda, ruling out the possibility of extraterrestrials without scientific evidence, while often providing silly hypotheses that describe only one or two aspects of a UFO encounter reinforcing the belief popular that it is a conspiracy.
A scientist must consider all possible hypotheses that explain all the data, and since little is known, the extraterrestrial hypothesis can not be ruled out yet. In the end, skeptics often do a disservice to science by providing a poor example of how science will be carried out.
The fact is that many of these encounters – still a very small percentage of the total – challenge the conventional explanation. 19659002] The media amplifies skepticism by publishing information about UFOs when it is exciting, but always with a mocking or capricious tone and rebaduring the audience that it can not be true. But there are witnesses and credible encounters.
WHY DO ASTRONOMERS NOT SEE UFOS?
I am often asked by friends and colleagues: "Why do astronomers not see UFOs?" The fact is that they do it.
In 1977, Peter Sturrock, professor of space science and astrophysics at Stanford University, mailed 2,611 questionnaires about UFO sightings to members of the American Astronomical Society. He received 1,356 responses of which 62 astronomers (4.6 percent) reported witnessing or recording unexplained aerial phenomena.
This rate is similar to approximately 5 percent of UFO sightings that are never explained.
As expected, Sturrock discovered that astronomers who witnessed UFOs were more likely to be observers of the night sky. More than 80 percent of the Sturrock respondents were willing to study the UFO phenomenon if there was a way to do it.
More of half of them considered that the subject deserves to be studied compared to the 20 percent that considered that it should not be studied. The survey also revealed that younger scientists were more likely to support the study of UFOs.
UFOs have been observed through telescopes. I know of a telescope sighting by an experienced amateur astronomer in which he observed an object shaped like a guitar pick that moved through the field of view of the telescope.
Other sightings are documented in the book "Wonders in the sky". the authors compile numerous observations of unexplained aerial phenomena made by astronomers and published in scientific journals during the 1700s and 1800s.
EVIDENCE OF THE GOVERNMENT AND THE MILITARY OFFICERS
Some of the most convincing observations come from government officials. In 1997, the Chilean government formed the Organization Committee for the Study of Anomalous Aerial Phenomena, or CEFAA, to study UFOs. Last year, CEFAA released images of a UFO captured with a Wescam infrared camera mounted on a helicopter.
The countries of Brazil, Canada, Denmark, Ecuador, France, New Zealand, Russia, Sweden and the United Kingdom have been declbadifying their UFO files since 2008.
The French Committee for In-Depth Studies, or COMETA, was an unofficial UFO study group consisting of senior scientists and military officers who studied UFOs in the late 1990s.
They released the COMETA report, which summarized their findings.
They concluded that 5 percent of the encounters were reliable but inexplicable: the best hypothesis available was that the observed ship was extraterrestrial.
They also accused the United States of concealing evidence of UFOs. Iran has been concerned about the spherical UFOs observed near nuclear power facilities that they call "CIA drones," which are reportedly about 30 feet in diameter, can reach speeds of up to Mach 10 and can leave the atmosphere.
with the fastest experimental plane, but unthinkable for a sphere without elevated surfaces or an obvious propulsion mechanism.
In December 2017, The New York Times published a story about the advanced aviation threat identification program, which was a $ 22 million program by former Pentagon official Luis Elizondo and intended to study UFOs.
Elizondo resigned from the execution of the protest program for extreme secrecy and lack of funding and support. After his resignation, Elizondo, along with several others from the defense and intelligence community, were recruited by the Arts and Sciences Academy To the Stars, which was recently founded by Tom DeLonge to study UFOs and interstellar travel.
In conjunction with the launch of the academy, the Pentagon declbadified and published three videos of UFO encounters taken with infrared cameras mounted on F-18 fighter jets.
Although there is a lot of excitement about such revelations, I remember a quote from the Retired Army Colonel John Alexander: "The revelation has happened … I have lots of generals, including Soviet generals, who have come out and have said that the UFOs are Really, my point is, how many times should senior officials show up and say that, this is real? "
A SERIOUS STUDY THEME
There is a lot of evidence that a small percentage of these sightings UFOs are unidentified structured vessels that exhibit flight capabilities beyond any known human technology.
While there is not a single case for which there is evidence supporting scientific rigor, there are cases with simultaneous observations of multiple reliable witnesses, along with radar returns and photographic evidence that reveal compelling patterns of activity.
The declbadified information from covert studies is interesting, but not scientifically useful.
This is a topic worthy of open scientific research, until there is a scientific consensus based on evidence instead of previous expectations or beliefs. If in fact there are extraterrestrial artifacts visiting the Earth, it would benefit us enormously to know about them, their nature and their intentions.
In addition, this would represent a great opportunity for humanity, promising to expand and advance our knowledge and technology, as well as reshape our understanding of our place in the universe.