As for individuals of the human species, it is safe to say
that with age and experience comes an increase in our own personal wisdom and
understanding. I believe that it is fair to say that we can say the same for
our species/society as a whole. The evidence for this can be seen by simply looking
at how far we have come with technology and how we continue to grow. If growth
in wisdom and understanding occurs with us as a species, it is reasonable to
presume that it occurs with ETs also. There is no way that we can know how old an
ET species may be or how much knowledge and understanding of the universe they
may have. However, it is possible to make some age estimates based the age of
the universe and what we know now. Specifically, the age of the universe puts
limits on the age of life in the universe, and we can use our timeline of life
as a basis.
The following are the current best estimates;
Age of the Universe, about 13.8 billion years old
Age of our own galaxy about 13.5 billion years old
Age of oldest star (sun) in our galaxy, about 13.2 billion
years old
Age of our sun about 4.6 billion years old
Age of earth, about 4.5 billion years old
Age of intelligent life on earth, about 7,000-10,000 years
old
Age of human technology about 250 years old
For comparison and additional information the following is
for our nearest neighbor, the Andromeda Galaxy;
Age of Andromeda, about 10 billion years old
Distance from Milky Way Galaxy (earth) about 2.5 million
light years
Number of stars in Andromeda Galaxy, about 1 trillion
Number of stars in Milky Way Galaxy, about 250 million, (25%
of the number of stars in Andromeda)
Diameter of the Andromeda Galaxy, about 220,000 light years
Diameter of the Milky Way Galaxy, about 100,000 light years
A brief explanation is necessary, a light year is primarily
a measure of distance, how far light travels in a year, about 5,878,499,817,000 miles. However,
it can also be thought of in terms of time with respect to a specific distance.
That is, traveling at the speed of light, it would take 250 million years for
the light of stars in the Andromeda galaxy to reach us here on Earth. In other
words, the Andromeda Galaxy is a really, really long way away from earth in
both time and distance. This is the argument used by UFO and ET skeptics to say
that UFOs and ETs simply cannot exist. The caveat to this skepticism is that it
is based on the limits of the physics we know today. This is why I am going to
dig a little deeper into age.
The biggest
question that you have to ask yourself: is the physics and science we know
today, or are currently working on, the end of physics and discoveries? That
is, once we have the current theories solved we will be done because there is
no more science to learn. I do not believe anything remotely like this to be
true. I believe that there is so much more for us to learn in physics and the
sciences, and I strongly believe that today’s scientists are mired down in
narrow historic beliefs. This is actually a discussion for another paper, but
it is important to say this as often as possible. Continuing on.
More and more
potential life supporting planets are being found almost every day. As a result
of these findings, more and more scientists believe that life exists elsewhere
in our galaxy and the universe. And, for us today we only have to look at a
couple of things to know that there has to be more physics and science in our
future. There is the issue of dark matter and dark energy. Nobody has a clue on
what this stuff is, how it came into being or how to study it. There is another
significant reality of our universe that nobody has a clue about, anti-matter.
It has been created in experiments so it is a fact that it exists. So why does
our universe not have free anti-matter? Many scientists and physicists believe
that as our society continues to age, there will be a lot more science and
physics learned. There simply has to be in order for us to even understand the
universe we live in today.
So, if age can
bring about new discoveries in science and physics how much age are we looking
at for other life in the universe? As listed in the beginning, the estimated
age of the universe is close to the estimated age of our galaxy. This makes it
possible to relate conclusions for our galaxy to the rest of the universe. The
available estimates show that the first star (sun) in our galaxy is about 13.2
billion years old. Using this as a starting point and the age of our solar
system with life here on earth, about 4.6 billion years old, this means that
there has been about 8.6 billion years for life to develop and age in our
galaxy before our own existence.
Same calculation for the Andromeda galaxy, our next door neighbor, shows that
it had about 5 billion years for life to develop. And recall, it is 4 times the
size of our galaxy.
A simple
evaluation of age shows that there have been billions of years for ET civilizations
to come into existence and flourish before us. How many other civilizations
could be in our galaxy, the Andromeda galaxy or the universe that are millions
of years older than we are. How much knowledge and understanding of the
universe could some of these older species have?
Could it be a
universal trait that as we as a civilization grow older we gain knowledge and
grow a little smarter? Given the number of civilizations that could be
hundreds, thousands or even millions of years older than we are, isn’t it a bit
naïve to believe that we are close to learning all there is to learn?