Life beyond our planet.

Is there any extraterrestrial life in the universe?
The question seems to belong to science fiction, but we still have so much to learn.

According to the "BBC", «a number of respected scientists speculate that extraterrestrial life» (1). Some of them believe that there is are a lot of different civilizations: « Some such as Frank Drake have even attempted to estimate the number of civilisations in our galaxy based on what we know about the Universe and life on Earth. »(1) He invented an equation called the Drake equation which is schematically based on averages and fractions of stars, planets, planets where life can be supported and where life can develop with intelligence, civilizations[civilisations] who that can develop technology that releases detectable signs of their existence into space and the lengtht of this signs. (2) According to a "business insider", the optimistic estimate gives a result around 140 000 species. (3) We could infer that statistically it is improbable that there isn’t intelligent life somewhere else in the universe.

On the 22nd of January 2015, the Times newspaper issued an article about an important discovery revealed by the NASA. « Since 2009 NASA’s Kepler Mission has been exploring the Milky Way using an extraordinary powerful space telescope. » (4) They recently announced the discovery of three earth-like planets where life could be thrive. But there still are thousands of planets candidate planets to inspect in order to discover where else life could exist or develop. (5)

What makes a planet habitable is the availability of liquid water in liquid form available on a planet. That is to say temperatures shouldn’t be too high or too low.

One of the earth-like planets is called « Kepler-62-f » and it spins around [orbits] a star which is 2.5 billions years (6) older than our sun. So if a civilization exists on this planet, it could be older than ours and have superior technology.

The astronaut Dr. Edgar Mitchell said that « governments over the last 60 years had covered up the aliens' visitations and their obvious technological superiority. » He considered he was "privileged enough to be in on the fact that we've been visited on this planet and the UFO phenomena is real". (7)

This is really good, Alice.

There is still so much of our planet to discover, and yet people try to quantify things with no possibility of accuracy! What point is there in knowing how many grains of sand are in a desert? We eventually concluded that black holes exist because it explains what happens in their vicinity, not because they can be seen or detected directly. It seems far more likely that 'we are not alone'.

The Earth might not discover the existance of other 'beings' until it's too late, there's no way of knowing if there is anything that might already be assessing our planet for their own use...

Den