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| proxima centauri b with its host star |
Even if we are not going
to evacuate earth in this century , then also we have to get prepare for it ,
because it would take at least a century for preparation of the interstellar
mission , and generation to move at new location .
Our astronomers are
working very hard to find places where humanity can settle and they have
succeeded of finding some places , currently astronomers found 4100 exoplanets
but unfortunately out of them only 161 are terrestrial planets like earth
remaining others are gas giants or icy planets, and in these 161 exoplanets
there is only a possibility that they can support humanity by having liquid
water and an atmosphere. from these 161 exoplanets there is a planet
called proxima centauri b which is in the habitable zone of our sun’s nearest
star that is proxima centauri .
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| constellation containing proxima centauri |
Proxima centauri is
basically a red dwarf and is only having 7.5 to 50 % of our sun’s mass i.e is
perfect for future human colony as it is having a life of trillion years . it
also contains hydrogen and helium as our sun .
Why we need to go to
proxima centauri system ?
It is not important for
us to go there today but will be important for us after 5 billion years as up
to that time our sun will become red giant and will surely engulf us so for
interstellar travel we need to start our preparation from now on.To know about
our sun’s life cycle just visit
How much time would it
take to travel to proxima centauri system?
Now here comes the
negative as besides being the closest star to our sun its distance from us is
4.5 light years that is if we travel at a speed of light we would reach there
in 4.5 years but it Is not possible in our case as technology of that level is
yet to be discovered , so if we travel by our regular space shuttle with speed
of 28000 km/h it would take 165000 years to reach their and if we travel at a
highest speed achieved by humanity in space i.e. by voyager 1 which is 61000
km/h it would take 77000 years to reach their i.e. at least 1000 generations
will spend their time in space .
How many people we need
to send in interstellar ship ?
According to calculation
we need 98 people to board on ship , these calculations are done by keeping in
mind about infertility , miscarriage or death of any member .
Some offspring of them
will never be able to see earth and proxima centauri, these offspring will have
to tolerate all the space radiation and will shed there muscles and will loose
there bone density as they have to live in zero gravity , after 1000 generation
the genes of these people will be modified according to the space condition i.e
they will have lower body mass larger head for proper blood flow as now they
will be having only brain which will be working at full
potential , it definitely sounds like alien maybe they will become
advance version of us with very high IQ and of course they will not be affected
by radiation as they are used to it.
What we need to know
before going to proxima cenatary b?
According to astronomers
proxima cenatari b is in a system having 3 stars . The size of the planet
is about 1.3 times the size of our earth and gravity of 0.95 to 1.4 g.
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| proxima centauri with two alpha centauri stars |
The planet might have an
icy composition and have a thick layer of hydrogen on its surface, it has an
orbital period of 11.2 earth days.
There can be a chance
that tis exopalnet is stuck with the red dwarf i.e. one side of it will face
toward star and other side there will be total darkness
Or maybe this planet is
same as like earth but not yet discovered.
The triple star system
consists of proxima cenaturi , alpha cenaturi A and alpha cenatarui B separated
by 2 AU { 1 AU is equal to the distance between the sun and the earth }
The exoplanet is about
7.5 million km away fro its host star while our earth is 150 million km
away from the sun , it seem that the exoplanet is too close but its not the
case as the the star has only 0.15% brightness compared to our sun and having
only 60% radiation which is faced by earth at this huge distance .
so everything about this
planet can only be revealed when we go there maybe there can be a case that
this planet is already containing a life .
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