It is 2222 A.D. The Earth is still bustling with many life
forms, but a rapid growth in human population has made us to find for other
habitable places. Even, Oceans have been conquered.
Some heavenly body in space would be a permanent solution to
this problem.
Fortunately, for us, scientists have found out an earth-like
planet, Icarus, in our own Milky Way galaxy, at a distance of about 13-light
years from us. 13-light years, sounds small, but it is actually 76 trillion
miles away from us. Human beings have made spacecrafts capable of achieving
speeds up to 25% of the speed of light. That means it would take around 52
years to reach Icarus. You would think, it is a very long duration, considering
the Human life expectancy in the past, but thanks to Genetic engineering, death
is now a topic in our history books.
This planet is Earth-like
because of the similarity of its size, and distance from its host star, to that
of Earth. Its host star is a red dwarf, about a quarter the mass of our sun,
and about 0.2% as bright. Because red dwarfs are small and dim, the habitable
zones around them form a tight circle, and any Earth-like planet will orbit
very close to it. That implies that such a planet is subjected to intense
radiation, and "tidally locked" to its star, with one side always in
the dark and the other always in the light. Icarus is a small rocky planet,
warm enough to have liquid water on its surface and is a host to alien life. Our
powerful space telescopes orbiting around earth have confirmed this. However,
to find out about the nature of aliens, is beyond the scope of our telescopes.
Scientists have decided against
launching a probe to the planet, given the lack of time and livable place on
Earth. Therefore, a manned spacecraft will be launched, without further delay.
This spacecraft would reach Icarus in 52 years. This attempt to colonize
Icarus, would consist of a team of 10 scientists, who have been trained
mentally and physically, according to the conditions that would be found there.
What are the options with us,
considering it would take another century to terraform Icarus?
Meanwhile, colonization of moon
or of Mars is the only option left for us.
Colonization of moon would be
tougher than that of Mars, due to the scarcity of resources in the former. Mars
has more than one-third of the gravity on Earth, while moon has only one-sixth
of that on Earth. Considering the fact that gravity plays an important role in
our lives, it would be difficult to adapt to the conditions on the moon.
Now, Mars remains the only hope
for us, for at least another century.