Photo Credit: Jcpag2012 / Wikimedia Creative Commons
Even in our local solar system there are numerous moons and planets for a celestial traveler to choose from.

In Israel, a family physician based in Arad ponders things much more profound than simple medical matters. Dr. Yuval Rabinovich, clinical director of one of the HMO clinics in the small northern Negev city is also a writer and inventor. Rabinovich recently contributed two articles to the HaYadan scientific forum on the issue of extra-terrestrial existence. Following is the first of the two articles, translated exclusively for by Dr. Rabinovich himself.

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When I was fourteen, I eagerly read Erich von Däniken’s “Chariots of the Gods? Unsolved Mysteries of the Past” in which he describes encounters between humans and aliens as being influential over human history and culture. The author claims the establishment has conspired against him to hide the truth. The opening sentence is, “It took courage to write this book and it takes courage to read it”, a brilliant opening that places the reader on the author’s side.

In the book he refers to ‘Drake’s equation.’ Suppose a constant rate of new stars are in formation. Some of these stars have planets. On some of these planets there are life-enabling environments. On some of these, life indeed was formed. On some of these, intelligent life evolved. On a few of these, a technology that enables sending signals to outer space was developed. Multiply this number in the amount of time that has passed since this technology was developed and you have a large number of civilizations in space.

To this day, fans of UFO theories present Drake’s equation as a claim.

When Doctor Frank Drake postulated his equation in 1961, he merely tried to point out the factors one has to take into account. The biggest change that has taken place since Drake’s equation was published is that planets that surround stars have indeed been discovered. This does not change the fact that was undoubtedly clear to Drake himself — that we simply do not know the magnitude of any factor of the equation.

So what do we actually know?

First of all, that Earth is quite unique. It is the only planet in the solar system that has a large amount of liquid water throughout the year. Earth also has a huge moon; we know of no other planet with such a relatively big moon. We also know that our entire solar system is located at the edge of the galaxy, where density of space objects is low.

We also know according to fossil records that life on earth were extincted almost entirely at least five times. The last extinction was the one in which all dinosaurs perished. The special thing about this extinction is that we believe we know what happened; a large celestial body (meteorite) hit the earth causing a nuclear winter that darkened the earth 65 million years ago.

Big animals do not survive big extinctions. But if size is evidence of complexity and if complexity is required for an intelligent species to evolve, it is still not understandable why none has evolved until 5 million years ago, when our still-not-very-intelligent ancestors made their first steps.

And there was enough time for that. Multicellular vertebrates walked the earth at least 300 million years. The dinosaurs were by no means less complex than modern animals, and still, no species that was technological enough to change its environment has ever evolved. We know modern relatively clever animals: elephants, dogs, dolphins, chimpanzees. Not one of them has come close to developing a language that can describe abstract ideas.

It is reasonable to assume that simple life on our planet formed as soon that suitable conditions exist, although direct evidence is lacking, since organisms that do not have hard organs do not leave fossil records. Some success in creating self-replicating molecules was achieved, however, even in-vitro.



  1. This is the true emmis… The aliens were here,but… They ran into trouble and the few aliens who could leave, left. Their problem was that they looked just like Oreo cookies… and when the people of that time saw what looked tasty to them, the humans grabbed the aliens and ate them forthwith .. some were even dunked in a glass of milk. So, goodbye aliens, it was tasty knowing you all. Note: Humankind suffered in the end because we never got to learn from the aliens what their tasty white middle was really composed of. But, be of good cheer…someday, maybe our astronauts will land on their planet, and Humankind can get a second chance. Maybe, with luck, there the astronauts will find aliens that ate jelly-filled donuts.. Do you think there may be a planet populated by gefilte fish? Infinitely possible!

  2. We are so smart that we don't know our own planet yet so how could we even hope to learn about someone else's. We have gone to the moon and back so what, nothing there. We still fight amongst ourselves (wars) so how are we supposed to understand others. I have an idea, we capture ISIS and send them to all the other planets on a mission from allah.

  3. one big scientific farce….we truly have no idea what reay went on hundreds of thousands of years ago….and certainly not millions.
    a lot of guess work and self induced theories are bounced off us….if some of it sticks, another twenty books are written….we know of some life (animals) , vegetaiton, etc….but what else really? A LOT OF SELF MADE THEORIES!!!!

  4. We don't know how much we don't know. Man has written records for 5,500 years. Yet, many things, like monoliths came before that time. How were they erected? There is no machinery or written record, but the evidence is there. When we don't have any other record, we make one up that sounds logical. Did the Inca do the Nazca Lines? How did they know what they were doing? It is obvious to me that they learned to fly. Glide the sky. It is feasible, just that we think it is improvable. We sort of know the story of the pyramids, but we don't. We can't figure out how they moved all that rock in the time allotted by history. The Sphinx is older than that, and it shows signs of erosion from water. Well, the Sahara may have been an ocean at one point. Who knows? Science tells us one thing and common sense says it's wrong, but that doesn't make sense either. If we don't know, and realize all of this is speculation, we have to keep digging. And, I really doubt the time line given here. You can't carbon date rock, and the same places may have been inhabited, then reinhabited many years later.

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