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Showing posts with label stars. Show all posts
Showing posts with label stars. Show all posts

Spirituality : Life after Death

all you guys might be wondering what has happened to me, how i come switch myself to this situation :P
relax, i haven't deviated from the original topic of cosmos, universe, but just taking to the other side of theories of cosmos, to be precise, I'm going to talk from Indian point of view.
lets first see whats life.
we can certainly define "not dead" as "alive" or "full of life"
but this is unclear, since we don't have fixed clear and independent definition of life
does life means consciousness?
consciousness in terms of knowing whats going around us, feeling the feel, feeling pain, joy, sorrow etc
seams simple isn't it
but tell me one thing that if this is consciousness then what about those people who as in coma?
they cannot feeling anything in medical terms yet we categorize them as undead or alive

here the whole definition of "life" or "alive" changes
i say, we don't know yet what is life and being alive actually means.
for understanding the meaning or getting definition of life we have to look into our Upanishads they have great deal of knowledge about what i life and what is death
talking of death lets explore this section as well

so what is death
again as it has been defined, death is the state where one looses consciousness
but here we can look towards those unfortunate people who are, or were in coma.
so what is life and death,
it has been question of ages long that what happens after death, what happens to that particular person that dies?

what is lost of him?
to this i would like to introduce you to a well known person, gawd :P
i don't believe in god, but i believe in cosmos, and its also called bhramand
Brahmans actually means big, very big, very very big
it has been clearly stated in Upanishads and Veda Purana's that god is everywhere
by this they actually meant that god is Brahmans,
as i earlier stated in my blogs that matter and energy are inter-convertible.
so?
so whats the deal with this has to do with god or Brahmans,
you still didn't get it?
well think about it, there is this universe, and there is our small earth, on this small earth we are smaller, and in us, yet smaller is our heart and brain, and still smaller are those cells, and it is made up of matter
just the same matter of which the universe,
those cells have energy which is again we get from matters we eat
so aren't matter and energy inter convertible?
then what has "the god" has to do with creation at all?
if matter and energy was inter convertible then there was no need of super power,
or if i say correctly then there was no need of "god", then why in India we have 56 crore god and goddess?
how come they even came into existence
if we go back to over holy books, specially Gita we find Krishna preaching Arjuna when Arjuna said why he would have to kill his own people, and wont he be a sinner,
to this Krishna said the same thing which i have been blabbering but in different language.....he simply said, souls cannot be created nor destroyed, they are always there, only there bodies die.
isn't this similar to what we are discussing today?
coming back to the title, life after death
if we believe Krishna and Einstein then we have something in us that never "dies" or "cease to exists"
what is that, we don't know
who gave us that, we know
yes the universe gave that power to us, in us, to be immortal in some other sense which we have yet to know, yet to discover.
some people say they saw ghost of there loved one
on medical terms they are delusioned, on Adhyatmik terms they have just seen the soul, that particular power of cosmos or universe which has been given to us, and if we continue believing Krishna then according to him those are the souls who haven't overcome earthy values etc etc.....
I'm not comfortable even with this idea and find this very, utterly controversial to even to complete the sentence, as i believe in science and universe, i will just add and say same thing what he said in today's clear language,
when people see ghost, they might come across the power of universe which hasn't yet found balance or enough energy to convert itself into another matter, too keep the balance of universe that energy keeps wandering which might be experienced by some very delicate and sensitive persons.

however, i haven't yet come across any such experience, and my mind says i have yet to understand and receive this awesome power of understand the greater being and heart says that I'm not meant to understand it yet.......................

this might shock you the least that i am and Atheist.


to be continued :)

Cosmos -Mysterious Black holes

welcome back if you are here again, and hello if you are first time
for the first times, i hope you know what is black hole
because to know the mystery of black hole, you have to actually know what is exactly black hole.

to put in simple and pure words, black is nothing but a very densely packed mass of gasses and dust, which has so high magnetic field that nothing can escape it, not even light, well, when you read this line, i am making an understatement.
you should get this in your head very loud and clear t
hat even light cannot escape from black hole.
think about it, isnt this like some amazing fairy tale?

well if you get that kind of feeling right now, i would like to welcome you to the universe
welcome to the world since you have taken some time out of your busy schedule :)

in last few post, i mentioned how black holes are formed, to brush that a little, lets revise it point wise
black holes are formed because
1:heavy initial mass of star
2:burning out of fuel
3:supernova
4:compression due to gravity to extreme condition

so these factor determine or tell the story of formation of
a black hole
a black can be termed as goon of our universe, like some gangster on loose...who will destroy everything that comes in its way.
and goons are always bad.

what makes them bad? why are they bad? they destroy things that's why?
no thats not the only one reason, but sure its one of the major reason
black holes are, as i earlier said,mass of highly packed gas and dust, today i would like to refine my statement, which would remind you that it is actually a dead star
black holes is mass of highly packed debris of dead star. sounds spooky to me :P
anyway, its actually debris of whats left from star when it die, how?
well see this, a star massive in size, so powerful that it l
iberates the same of amount of energy in one second as sun take a year to give. and that all, a star which is tens and thousand times bigger than sun itself, just guess the size, what would be like to stay in a solar system with such star and have it as sun, better be the ninth planet for it :P

when star run out of fuel, it extinguishes, what left
is lithium or carbon or any higher atmoic number bearing metal in periodic table
for e.g lets assume that its made of carbon
okay, so here we have so much carbon that its ball was
many times bigger than sun, suddenly after its off, the whole mass is concentrated not bigger than the sun,in fact many times smaller than sun.
such is the density, such is the compactness, such is the gravity inside.
and this dudes, is the real culprit.
this gravity due to the awesome mass collapsed, is so strong that it simply devourers anything that might be in its way and still be hungry for more. till date never anyone has seen a black hole dying, we have just seen them eating, gobbling up planets-suns-stars-and even galaxies
dont be surprised, there is more to add to this.
have you seen carefully to a glass of water when you s
tir it with spoon?
what happens?

a vortex is created, right
well imagine something like that big rotating at very high speed, what will be size of vortex
but wait here, aint i wrong about vortex, here on earth when you stir water, you are actually stiring the whole medium, and in space there is no medium, so how can a vortex be there?
when a black hole is revolving it too creates a vortex and the vortex are at its poles, the poles on which it is spinning
this vortex is made up of dust and gas which black hole
once devoured, x-rays, u-v's, radio waves and cosmic waves
and believe it or not, these vortex are so long, sometimes even span through and through a galaxy

these vortex are so large and powerful that they can ev
en destroy a galaxy from light years of distance
but these are less destructive from the hunger and striving of the black hole. its mass keeps increasing and hence gravity
nothing can ever come out of it. on earth we k
now that speed of light is so very fast, plus its not made of particle so we cant make a device which can bend light except change the medium, not by attraction
if ever we created it, it will first destroy our planet by attracting everything, including the hot-molten-iron-lava inside, and turning whole planet upside down, well we will talk about it later, light, focus on light.
bottom line we cannot bend light by attraction, but black holes can, there force of gravity is such that it not only bends light but even absorbs it all the way.
your next question must be that, if they dont have there own light (as then name suggest-black) and they dont reflect light visible to our eyes, then how the hell are they detected at first place.
black holes are not pinned at one place, they move, and we humans have a big keen eye up there called Hubble telescope, it keeps 24X7, 365days its eyes looking for cha
nges, when astronomers find that there was a no stars visible in that area and after few years suddenly becomes visible, they match years of photographs and then after there finding they declare that there might be/is a black hole there, destroying things.
such are black holes detected in space.

but i too am still wondering about a fact,
we know that light is energy, infact every thing in this universe is energy as per Einstein energy and mass are inter-convertible, so where is this energy going.....is it being converted into mass, if yes, what kind of mass is that?
what metal/non metal it converts itself?
what will happen when the mass increases like anything and it again becomes very big o initial size but huge mass.
my question is only, 'then what?'

we dont know yet, if you think you know, tell me as well,
why we dont know because our time frame is much smaller than that of stars, like we see moths, they are born and die on same day, there lifepsan is of 24hrs, but from there perspective they are born, become adult, mate and give eggs, and then die, for then we, humans are like those stars to us,, eternal-immovable-dormant-mysterious etc etc
so we have to wait for years, maybe decades, maybe centuries to get an answer of what might be happening to black holes...........

what might happen?

Cosmos - life of a star

last time we discussed about birth of star, now im gonna tell something about there life
unlike us, they live million and billions of year, such is there su
pply of fuel.
such is the big universe and such abundant is hydrogen there that its like almost non-exhaustive
now since the fuel is so much available, that...what the heck should i say about it more...
also the fuel is so much that all stars dont have same mass
if we take sun as scale, the standard, some are smaller than sun, and some are big, bigger, massive than sun
many many times that of sun
this mass alone decides the fate of stars, its already written when the stars have gain there mass that what will happen
to them and how will they die....
yes, stars die too.

lets consider stars with mass less than sun
the stars who have mass less than sun, aren't much event full, they are like under average guy in your class.
they do almost nothing..
actually there mass is less so there gravitational force is also less
than average, which fails to hold gas and dust together. resulting....fusion doesn't takes place so loudly and drastically as in other stars
so it glows lightly..little by little..slowly
and glows with white light, revolving slowly.....its awesome sight for anybody, even soothing, to see this star
it is called white dwarf
it remains as it is. simple, glowing thing, suspend in nothingness of space,
but you might as me, what happens when it runs out of fuel?
well then it stops glowing firstly then once fire is out, gravity comes in,
it shrinks ans shrinks, to such a point where the star becomes very unstable
war rages throughout the star
a war between gravity and fire...gravity pressurizes star to such extent that temperature again stars to rise, and then
one fine day......temperature reaches to such high point that it simply booms out.
it shatters, bursts up, blows up in pieces
leaving behind nothing but ashes and residue
of what left helium (hydrogen fuses to form helium)
it isn't spectacular as what happens to massive stars

imagine a star10-20 time size of sun
such are objects up there in sky
what happen to these is bit similar to smaller stars at starting, but later, they glow like anything
the amount of energy sun gives us in one year there might be a
star so massive which will give that kind of energy in one sec.
but fuel is abundant but not unlimited, someday there fuel goes out as well

then what happens is not less than what happens in some Hollywood sci-fi movies

first it gets extinguished due to lack of fuel, then stars to contract, pressure increases.
then something strange happens....
its outer shell starts expanding, which mostly contains hydrogen and it still has fire in it,
slowly and slowly the outer shell expands, engulfing the nearby planets and there satellites.
its a prefect villain any solar system might want to ha
ve. the ever expanding outer shell containing hydrogen which is burning like residual fuel. slowly and engulfing other plants.
but this was the story of outer shell, what about the inner stuff.......
well the inner stuff which is again some left hydrogen and converted helium, stars to compress, due to excessive mass and gravity it compress quickly, and temperature rises as well, which in turn ignites the helium again, and it starts to glow with white light...
and soon due to so high temperature, it runs out of fuel(helium), then what,
then helium which has been converted to lithium will burn, this will continue till..there is balance between mass and fuel
but this is not the end
bigger stars i.e these stars have there fate written to be some
thing else...
these stars collapse and crushes itself with there own gravity, so tightly so highly packed.
imagine sun packed in your palm, such high
is the density of it.
these are called Black Holes


black hole are such things,
they have such high gravity that even light cannot escape.
you might question me, if light doesn't escape from black hole how the heck did one find then,

simple answer to this is that look for a spot where you cant see nothing but find something missing there..like in below pictures.....on of it shows a black hole feasting on a nearby star.

to
be continued

Cosmos - A star is born.....somewhere

in last post i introduced you to fact that stars were actually nothing but ball of gas and dust, but heck why they do glow?
most of us have only seen a bulb and tube light (some even see fluorescent watches as light source) but yes stars too glow like all these, in fact they have there own light, just like our beloved sun who is million-billion years old. our grandpa

to understand why they glow, we would have to go to molecular level, even towards atoms.
in our universe we have hydrogen in abundant which is a perfect fuel.
so far so good, hydrogen is fuel and it catches fire and starts burning, but wait, who lights hydrogen? who has the ability to light this hydrogen who's power still cannot be trapped by us humans?


answer : gravity
strange na! see, e know that everything is attracting each other, on earth even im attracting my keyboard with same force as it is attracting me, but it never overcomes gravitational force of earth nor i overcome my mass. so we are both at same place as we were, but in space, its different story. in space the only force is gravity but not by another thing, but themselves
like take a big block of mass, some stone, now it is hanging there is space, but due to its mass and Newtons theory it will start attracting things/gasses/dust/smaller stones towards itself, a more practical example is earth and moon.
so when the gasses start to get collect at one place due to attractive force between them, as there mass increases, there force of gravity also increases, increasing the force of gravitation, hence increasing the mass, this continues eternally (some million years, for us this is eternal :P ) then as the mass increases, pressure inside increases as well, which in turn pushes the hydrogen atoms in there closer and closer,
there something happens
the pressure ever rising
the temperature ever rising
hydrogen atoms coming closer and closer
and then suddenly.........
the two hydrogen atoms fuse (hence fusion), and release a massive amount of energy and high temperature

almost like 20 Hiroshima and Nagasaki in single blow, which ignites the rest of hydrogen
and a star is born........somewhere
which will continue to glow eternally somewhere....like our sun, like the nearest star...like those twinkling little things up above the sky......there how everything started
have you ever heard of fourth dimension?
lets talk about it in nxt edition :)

Cosmos-Have you ever wonderd


before reading any further i would like you to ask yourself, are you alone?
no idiot, i didnt mean in the room,
just think are you alone in this universe....

i think not....but what the heck is that to do
with our life?
nothing in particular to be honest, but i
took some time from my helter-skelter life to wait, stand, look up, watch those beautiful stars up there.
arent they beautiful !

but wait, before i get caught in there charm, i ask myself, where are they? who are they?
why are they up there and so small?

answer to these question are also with a 5yr old child, who knows the nursery rhyme "twinkle twinkle little stars"
he knows "it up above the world so high", so do we,
but how much 'above'
arent you intrigued by this large distance, aren't you fascinated by the awesomeness of those blinking things.
lets start from base.
for those who aren't/weren't a science student, light travels at 299,792,458 m/s
aprox:300,000,000 m/s or 30,00,000 km/s

if you want an estimate we drive bike normally at not more than 60km/hr i.e 16.67m/s
and here we are seeing speed of light at whopping 17,983,950.7 times than ours,
this is madness even to think about comparing, but just to show actually what is light
.
anyway
did you know that it takes approx 8 mins for sunlight to reach surface of earth, imagine light traveling at such enormous speed still taking 8 mins to reach earth, 149,565,511 kilometers.
since all these units are becoming too small for us to calculate and even write here, lets look towards our maths and physics textbook, there is defined a new unit, light years, dont get baffled
it is actually distance traveled by light in one year time
one light year=9.4605284 × 1012 kilometers
so far so good, whats next now

well sorry to deviate you from beautiful stars :P

but this was the setting of what is going to follow.

okay, so we were looking up the sky, and wondering what they are, and where are, who they are
lets go step by step

most of the people like me might know what they are.
they are nothing but a ball of gas and dust, gas is mostly hydrogen
they why the heck are they glowing, well to understand this, i feel is necessary for us to understand what is fission
now if you have seen that wiki page, then in simple language i will s
ay that fusion is actually joining of two atom/atomic nuclei, what happens is when these gas molecule are packed tightly , so tightly packed that the nuclear forces between the electron and proton loose its battle to gravitational and external pressure. will explain more soon

these stars glow because of fusion, fusion releases high amount of energy which is still uncontrollable for us humans, and havnt yet able to setup such device that could hold the energy coming out of fusion. sun is perfect example
actually sun is a mid-sized star. which has fuel almost unlimited that it has been burning continuously for last 4.5 billion years old, and whats your age :P
like sun there are many other stars, and those are there up are gas ball but some are much and many time heavier than sun, but now wonder why they are so small like speck of dirt whereas sun is so big enough to make us sweat in summer days?
answer : distance in light years (now you know why i wasted your time :P )
4.22 light years or 9.46 x 1012 km long way.....still closest
its name is Proxima Centauri.
welcome to our nearest neighbor :)

more in next version