We have entered the era
of space travel. Men who will first land on the moon are already among us. Time
is not far off when we will travel to other planets as we travel now to other
countries. Gagarin, Titov, Sheppard, and others have already proved that it is
possible to cross the limit of the gravity of the earth and travel anywhere in
space.
In order to escape the
gravitational pull of the earth, a speed of at least seven miles per second is
necessary. This speed is possible only by means of a rocket. It is an
aero-plane that flies up speedier than a bullet.
It has to be fired in a
fixed direction like a gun. When it escapes the gravitational pull of the
earth, another rocket comes out of the first rocket and continues the journey
upward to any destination without any friction because there is nothing, not
even air, to slow down its speed.
Space travel raises many
problems. The first is the problem of refueling and supplies. This will be
accomplished by means of a floating platform round the earth on which supplies
of all kinds will be stored and this will be used for landing and repairing purposes.
This interplanetary station will be the first stage. We may need many such
interplanetary stations if we attempt long voyages to distant stars like the
Mars.
Another problem is that
of weightlessness. Once we escape the gravity of the earth we will cease to
have any weight. We will be able to walk on the roof or walls like an ant. In
that case we will need magnet in our shoes to keep us tied to the iron floors.
All our tables, chairs, etc., will have to be nailed or they will start flying
like a magician’s work.
Food is the third
problem. It will not be possible for us to eat or drink anything in the usual
way. Since there will be no gravity, it will not be possible to push the food
down our throats by the common method of putting it into our mouth. Food will
have to be taken in tubes such as we use for toothpaste purposes. It will have
to be put in the mouth and pulled down into the stomach by practice.
Atmosphere will be the
fourth problem. We will have to carry air in sealed bottles, because there is
no air above in space and we cannot live without air. Both air and water will
have to be carried along with other necessaries of life
Those who first land on
the moon will not find it that interesting place which it appears to be on a
moonlit night. It may be a dry, deserted and dead world where nothing grows.
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