WHY IS SPACE COLONIZASION A VERY IMPORTANT THEME
The primary argument that calls for space colonization as a first-order priority is as insurance of the survival of human civilization, by developing alternative locations off Earth where humankind could continue in the event of natural and man-made disasters.
Theoretical physicist and cosmologist Stephen Hawking has argued for space colonization as a means of saving humanity, in 2001 and 2006. In 2001 he predicted that the human race would become extinct within the next thousand years, unless colonies could be established in space. The more recent one in 2006 stated that mankind faces two options: Either we colonize space within the next two hundred years and build residential units on other planets or we will face the prospect of long-term extinction.
In 2005, then NASA Administrator Michael Griffin identified space colonization as the ultimate goal of current spaceflight programs, saying:
The recent evidence that the initial announcement to observe yperfoteinon neutrino detectors from the Gran Sasso due to experimental error confirmed, once again, the strength of the Theory of Relativity. But at the same time strengthened and a wrong idea that has prevailed more or less the general public, that this theory does not allow any physical body to travel faster than a light beam. The truth is that this can be achieved, and indeed everything in the General Theory of Relativity. So far they have proposed two methods to achieve this seemingly unrealistic goal: the cosmic tunnel and distortion of spacetime. The remarkable thing is that both methods have already occur in science fiction films: the first in the film Contact (Contact) and the second in the television series "Star Trek."
THE GOLDILOCKS ZONE
Also called the habitable zone or life zone, the Goldilocks region is an area of space in which a planet is just the right distance from its home star so that its surface is neither too hot nor too cold. Earth, of course, fills that bill, while Venus roasts in a runaway greenhouse effect and Mars exists as a frozen, arid world. In between, the conditions are just right so that liquid water remains on the surface of the planet without freezing or evaporating out into space. Now the search is on to find another planet in the Goldilocks zone of another solar system. And astronomers have a couple of tricks they're not afraid to use.
IF WE CANT GO TO ANOTHER SOLAR SYSTEM WE CAN JUST MAKE MARS SUITABLE FOR HUMAN LIFE
Why is Mars the most convenient choise το create colonies?
In every way, Mars is the planet that will host the dreams and action of the humanity for the next centuries. The fourth planet of our solar system, is the only planet world that reminds us our home.
Τhere is a substantial likelihood that perhaps the miracle of life began on Mars and was transported to Earth via asteroids, where it took root and while continuing its evolution on Mars, its parent planet. imagine turning four billion years back. Would you another microorganism. Where would you have more chances to survive? Mars would undoubtedly win that bet.
Making Mars suitable for human life is a grandiose plan that will keep mankind busy for centuries, if not millenniums. The result will be the reviving of a dead world.
PROJECT MARS ONE
Η προηγούμενη γενιά έζησε την προσσελήνωση.
Μήπως η δικιά μας θα ζήσει μια αποικία στον Άρη;
HOW HUGE ARE THE DISTANCES?
Because of this, distances between stars are usually expressed in light-years, defined as the distance that a ray of light travels in a year. Light in a vacuum travels around 300,000 kilometers (186,000 miles) per second, so this is some 9.46 trillion kilometers (5.87 trillion miles) or 63,241 AU. Proxima Centauri is 4.243 light-years away.
Another way of understanding the vastness of interstellar distances is by scaling: one of the closest stars to the Sun, Alpha Centauri A (a Sun-like star), can be pictured by scaling down the Earth–Sun distance to one meter (~3.3 ft). On this scale, the distance to Alpha Centauri A would be 271 kilometers (169 miles).
The fastest outward-bound spacecraft yet sent, Voyager 1, has covered 1/600th of a light-year in 30 years and is currently moving at 1/18,000th the speed of light. At this rate, a journey to Proxima Centauri would take 80,000 years.
Dont worry! Milky way is just 950.000.000.000.000.000 killomieters and is considered to be small according to others.
WAYS OF TRANSPORTATION THROUGH SPACE
Embryo space colonization
Embryo space colonization is a theoretical interstellar space colonization concept that involves sending a robotic mission to a habitable terrestrial planet transporting frozen early-stage human embryos or the technological or biological means to create human embryos. The proposal circumvents the most severe technological problems of other mainstream interstellar colonization concepts. In contrast to the sleeper ship proposal, it does not require the more technically challenging 'freezing' of fully developed humans
HOW WILL THIS BE POSSIBLE?
Embryo space colonization concepts involve various concepts of delivering the embryos from Earth to an extrasolar planet around another star system.
- The most straightforward concept is to make use of embryo cryopreservation. Modern medicine has made it possible to store frozen embryos in various low-development stages (up to several weeks into the development of the embryo).
- Going a step further, the spacecraft "cargo" could be limited just to the genetic information of humans stored in computer files. In this case, sperm and egg cells would need to be recreated by a biosequencer at the target planet (this proposal is currently not technologically feasible).
REACHING EXTREMELY FAST SPEEDS
If we accept the existance of UFOS, then we must be able to explain their strange behavior. The witnesses report for them instant fast accelerations, sharp turns of 90 degrees with enormous speed, change of shape or colour and even disappearance, like they jump from one world to another. UFOS are clearly violating the laws of today’s physics. No human spacecraft could imitate their strange and magical behavior. So it is obvious that if we want the possibility of interstellar travelling and be able to explain the phenomenon of UFOS at the same time, we will have to move on with courage to the creation of a New Physics, that will allow all the above, and abandon the ancient perception of the ''impossible'' from our classic theories.
Even conservative Nasa, by recognising the important weakness of our today's theories, was forced to innovate and set a programme of investigation at 1966 for the possibility of new ''revolutionary systems of space promotion'', as long as it does not violate some fundamental principals of physics, like the principle of conservation of momentum and energy.
HOW ARE ASTONAUTS' LIVES
HOW DO THEY SLEEP?
HOW DO THEY EAT?
Living in space is not the same as living on Earth. In space, astronauts' bodies change. On Earth, our lower body and legs carry our weight. This helps keep our bones and muscles strong. In space, astronauts float. They do not use their legs much. Their lower backs begin to lose strength. Their leg muscles do too. The bones begin to get weak and thin. This is very bad for astronauts' bodies. So, how do astronauts help their muscles and bones? They must exercise in space every day.
The heart and blood change in space, too. When we stand up on Earth, blood goes to our legs. The heart has to work extra hard against gravity to move the blood all around the body. In space, without the pull of gravity, the blood moves to the upper body and head. Water in the body also does the same thing. It makes the astronauts' faces look puffy. The blood and water are fluids in the body. These fluids move from the bottom of the body to the top. The brain thinks that there are too many fluids. It will tell the body to make less. When the astronauts come back to Earth, they do not have enough fluids in their systems. It takes their bodies a few days to make more blood and water. The astronauts have to rest so their bodies have time to make new blood and water. If they don't, they can feel very weak. They might even faint!
On Earth, people need to stay clean. In space, astronauts need to stay clean, too. Staying clean takes more work in space. In space, the astronauts do not have a bathroom as we have at home. But, they do have their own toothbrushes, toothpaste, combs, brushes, and shavers. These are kept in a Personal Hygiene Kit.
Astronauts use toothpaste and toothbrushes just like yours. There is no sink like yours on the Space Shuttle, though. Astronauts have to spit into a washcloth.
People take baths a different way in space, too. Astronauts use special kinds of soap and shampoo. These soaps do not need water to rinse. Astronauts must use them carefully. They do not let the soap bubbles go all over the place. After washing, they use a towel to dry off. They do not rinse. These special soaps and shampoos were made for hospitals. Patients who cannot get in the water use these soaps.
AS YOU CAN CLEARLY SEE , LACK OF GRAVITY IS A MAJOR PROBLEM THAT ASTRONAUTS FACE
FOR THAT REASON , BETTER DESIGNED SPACESTATIONS OR SPACESHIPS MUST ME MADE
THIS TYPE OF SPACECRAFT HAS BEEN USED FOR MANY POPULAR FILMS THAT HAVE TO DO WITH SPACE
THE DRAKE EQUATION
How can we estimate the number of technological civilizations that might exist among the stars? While working as a radio astronomer at the National Radio Astronomy Observatory in Green Bank, West Virginia, Dr. Frank Drake conceived an approach to bound the terms involved in estimating the number of technological civilizations that may exist in our galaxy. The Drake Equation, as it has become known, was first presented by Drake in 1961 and identifies specific factors thought to play a role in the development of such civilizations. Although there is no unique solution to this equation, it is a generally accepted tool used by the scientific community to examine these factors.
Based on the above, the Drake Equation gives N almost 50.