We are sure there is life on a planet in the universe, because there is life on planet earth!

seti projectE=MC2 suggests that energy and mass are interchangeable. This is one thing to keep in mind when thinking about the beginning of the universe and the big bang theory. The big bang theory suggests that the universe emerged from a tremendously dense and hot state about 13.7 billion years ago. Theory suggests that the universe was only filled with anti matter particles. The movement and collisions of these anti matter particles would have caused the universe to be heating up for quite a while. At one certain point, to much heat and density should have caused the "Big Bang".

Anti matter was being destroyed and matter as we know it was being forged during this intense explosion.

This explosion expanded to an enormous amount of heat, matter particles were spawn around, bumping in to one another forming clumps of matter. These collisions were forming more and more explosions and energy reactions, which eventually formed clumps of mass. The clumps off mass collided in an ever expanding explosion and grew to be our universe system.
Since then the universe seems to be expanding. Rays from the big bang are still traceable nowadays, just put on your television station and watch the signal when no cable is attached. Hubble found out that objects were moving away from us, by measuring distances between galaxies. This suggests that once things were closer together, hotter and denser at a certain point in time.

Since the universe has been expanding millions of galaxies, stars and planets have been formed. One of them is planet earth and our life giving star the sun. But our sun has limited time left to live (about 5 billion years). In this remaining time we’ll have to find other planets in other solar systems in far away galaxies, when we “the humans” want to stay alive after our sun becomes a supernova. There must be numerous suitable planets out there we just have to find them.

How can we estimate the number of technological civilizations that might exist among the stars? Or better said the number of planets suitable for life? Dr. Frank Drake conceived an approach to bound the terms involved in estimating the number of technological civilizations/suitable planets 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.
The equation is usually written:


N = R * • f p • n e • f l • f i • f c • L

Where,

N = The number of civilizations in The Milky Way Galaxy whose electromagnetic emissions are detectable.

R * =The rate of formation of stars suitable for the development of intelligent life.

f p = The fraction of those stars with planetary systems.

n e = The number of planets, per solar system, with an environment suitable for life.

f l = The fraction of suitable planets on which life actually appears.

f i = The fraction of life bearing planets on which intelligent life emerges.

f c = The fraction of civilizations that develop a technology that releases detectable signs of their existence into space.

L = The length of time such civilizations release detectable signals into space.

 

A Planet

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Interesting universe and space related blogs and webpages:

Hubble blogje

Universe 2seeU

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We are sure there is life on a planet in the universe, because there is life on planet earth!


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date: 2007-09-21  Hits: