Astrobiology.
Note 1.
The search for extraterrestrial life, is not only a scientific curiosity, but perhaps a manifestation of our collective instinct survival.
The laws of physics that are valid today, we say that in a span of 4500 million years ago, the sun burstARA as a nova and our entire solar system will become a cosmic dust cloud, rich and dense.
But long before that, when in the sun, available for hydrogen fusion into helium, it is less abundant, our star, astrophysicists classified as a white dwarf, will become a red giant and the expansion of its diameter absorb Mercury and Venus and probably also because of the Earth. It is an exaggeration to say that our days are numbered, but it is no exaggeration to say that nif ur millennia and we must keep in mind that all deadlines are met.
would think that when living conditions on Earth are very poor, our civilization would go rushing. First to the Moon, then Mars, then some moons of Jupiter, Saturn or Uranus, and finally leave the solar system.
There are several little problems that make this positive thinking no longer an illusion. Mars and moons mentioned do not have the right atmosphere is not known if they have water and the weather can be scary. But even if that & amp; eacute; sto might be possible in the future, the nearest star to Earth, Proxima Centauri, is 4.22 light years. As is known, is not habitable and also to speed we drive to get out of the Earth, about 11km / s, it would take about a million years to reach it. On average our life lasts 80 years, and even providing generations born in the ships, to reach this star is an impossible goal to achieve.
So unless there is divine intervention to annul the laws of physics or rephrase it, the civilizationn on Earth sooner rather than later is going to end.
is why it is I say that our astrobiologists, in addition to scientific curiosity, are obeying the collective unconscious, to fight for the survival of life.
Today astrophysicists search for exoplanets, that is, planets outside the solar system. To date they have discovered more than 200, but their knowledge is very poor with respect to whether they are living conditions for our lives. There is also the problem of the distance. These exoplanets, somes are in the Milky Way and others out of it, located at distances that are inimaginbles.
Also, as radio signals travel at the speed of light, the scientific community has receptors Diaye night, waiting for signals from space, to tell us whether there is life smart out there. SETI is a project whose mission is to contact intelligent life outside. SETI is an acronym in English that means "extra-terrestrial Intelligence Search."
Our astrobiologists are more grounded and would be very happy if they could, as a first step, find out if there is microbial life on the Moon, Mars, or in some of the moons of Jupiter and Saturn. However, in order to avoid surprises in the search for extraterrestrial life, it is necessary to redefine the concept of life. This has been done astrobiologists.
This is done in footnote 2. Juan Fernando Sanin
0 comments:
Post a Comment