The big
bang produced only hydrogen, and helium, and no other heavy elements
that lead to the formation
of force stars, and inside the stars
you form. Bigger elements
like carbon, oxygen, silicone, all the way up
to iron, and as long as
these elements are stuck inside the stars, we
still don't get to use them to form a body, so it doesn't explain where we came
from. These stars can actually explode at the
end of their life that would release a lot of stuff back into the outer space. At the core of these stars gets released like carbon,
nitrogen, oxygen and
iron that eventually form a body. So what is believed is that our
sun is probably
the third generation star.
So we had the initial stage of the star
formation based on the hydrogen heating alone.
Some of it exploded, which leads to more stuff,
reach the end of life exploded, and the sun use that kind of material to form the initial core of the star. So the explosion
star, like this is very important because that will be the origin of our own existence. So we came from the star. That is what we
are actually made of.
But of course we
should still ask the question, is that really true? Is there any evidence for
that? These days we can study the object, in many different ways. By using optical telescope, just the usual telescope, you can
observe x-rays. We can use infrared light like when we talked
about seeing big
the black hole at the center
of the galaxy. And radio; which we
have used also for the observed
the big bang itself. By combining information from these different
techniques we can bet a better understanding of what is going on inside this object.
These time sequences of the X-ray
textures coming from Chandra satellite we can see that there's still a throbbing going on. So, this happened like thousand years ago when it exploded,
but is still releasing
material. We can see that the supernova does release material
into space
and that's how we can do exist.
We believe that something like that is going to happen soon, actually very nearby.
We would immediately
notice that this is actually a very close
distance on the scale
of the universe. If the star is disclosed, we can even measure how big it is
just by looking at it using telescope. The apparent size of
Betelgeuse has shrunk
by 15%, in a mere 15 years. Something is
really happening with this star. So we can even observe
the surface of the
star, when
the star is so close.
What we see is that the surface
is also really throbbing now. We’ll see
parts that are swelling up, parts that's sinking in. So we see that surface is very dynamical at
this moment. So that really shows us that's something’s
going to happen to this star pretty soon the
case may mean next 10000 years, but we know
explosion may happen tomorrow as well. We don't
really know we can predict, but it's clear that this going to happen sometimes
soon into a big supernova. So putting thing in
perspective the way we can tell, how old a star
is? What it is the stars made of?
contd...
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