Our Universe began about 13.7
billion years ago as per the Big Bang theory which is accepted by a very large
majority of astronomers and cosmologists.
A solid proof for this is the
Microwave Background radiation coming in to us from all sides of the Universe. As
far as our sightings and measurements go, no object in the universe is older
than 13.7 billion years. This indirectly indicates that this may indeed be the
age of the Universe.
Traditional Big Bang Theory says
that the Universe began with a ‘Singularity” or a single point, which is a
point of infinite density and temperature. At this point physical rules known
to us do not operate and it is beyond conventional physics. So at the point of
explosion or the Big Bang we cannot even postulate the parameters that existed.
Cosmologists suspect that the
forces that rule the Universe today—Gravity, Electromagnetism and the Nuclear
were unified into a singular force at the time of the Big Bang. Incidentally
when Albert Einstein died he was working on the Unified field theory that puts
all the 3 forces into one.
Scientists have picked up the
story of the Universe at 10 raised to the power of -36 seconds after the Big
Bang. At that point scientists believe that the Universe underwent an extremely
brief and dramatic period of expansion, expanding faster than the speed of
light.
This rapidly expanding Universe
had very less matter, but it had huge amounts of dark energy. As per cosmologists
it is the dark energy that is driving the current expansion of the Universe
which is actually accelerating.
The sudden inflation has cooled
down the superhot Universe, but when dark energy got converted into ordinary matter
and energy the Universe heated up again.
Just after inflation the Universe
was filled with hot and dense Plasma. But by the time of 10 raised to the power
of minus 6 seconds from Big Bang it has cooled down enough to allow protons and
neutrons to form.
In the first 3 minutes after the
Big Bang the protons and neutrons fused together and formed a positive Deuterium
ion and the Deuterium ion in turned
joined up to form the positive Helium ion. But these are just positively
charged ions without any interaction with the electrons. It took 380,000 years
after Big Bang for electrons to combine with the positive ions and form atoms.
The first stars started shining
only 300 million years after the Big Bang. Over time stars gravitated together
to form galaxies and planets coalesced around some of the newly forming stars.
All this is fine, but how did
that singularity which led to the Big Bang come into being? For that we have no
answers at all. Time itself started with the Big Bang, so before that there was
nothing called time. In fact what is time? It is nothing but duration between 2
events. At the time of singularity there was nothing else but that itself, so
there is no question of time either. Time only started with the Big Bang.
In this context I am reminded of
the Nasadiya Sukta of the Rigveda. I give below two verses from the Sukta.
Then there was neither
death nor immortality
nor was there then the torch of night and day.
The One breathed windlessly and self-sustaining.
There was that One then, and there was no other.
At first there was only darkness wrapped in darkness.
All this was only unillumined cosmic water.
That One which came to be, enclosed in nothing,
arose at last, born of the power of heat.
nor was there then the torch of night and day.
The One breathed windlessly and self-sustaining.
There was that One then, and there was no other.
At first there was only darkness wrapped in darkness.
All this was only unillumined cosmic water.
That One which came to be, enclosed in nothing,
arose at last, born of the power of heat.
You can judge the similarities of
the Sukta and Singularity. Of course this does not mean that the Vedas knew
about singularity, but it certainly shows its advanced thought. Other things
were also mentioned in the Sukta which is highly skeptical, but I have given
here the only 2 verses that are relevant to my point.
Another thing, we know about the
singularity from which our Universe evolved, but can we assert that more such
singularities did not exist in dimensions unknown to us and there may be other
Universes as well where our physical laws do not hold? We cannot say anything
on that, and there is no way of ascertaining that ever, because we have no
means of detecting the other dimensions, and all our instruments come to naught
in discovering them.
No comments:
Post a Comment