Saturday, February 25, 2012

Life in the Universe

As I have seen the article most visited is ''Before there was nothing'', I'm going to write something more about the Universe.

Today I want to write about the planets and satellites where maybe there're life.
First, I just a date: we live in the Milky Way, in the Milky Way there're 200.000 millions of stars in 100.000 lightyears of diameter (approximately). The visible Universe measure around 14.000.000.000 lightyears and until today we could count around 125 billions of galaxys in the Universe...
REALLY DO YOU THINK WE ARE ALONE IN THE UNIVERSE? I don't say intelligent life, I say life like microorganism...
It's true the life need very specific conditions to be life, but... in such a big space!

The first planet where we tought there was like was Mars, but... after a lot of years we didn't find life in Mars. But that don't want to say there aren't life in the Solar System...
The Saturn's satellite Titan can be to have live. Titan it's very similar to the Earth. Titan has seas and mountains! But the Titan seas aren't of water (H2O), they are of methane (CH4). It's more difficult that there were life in a methane sea, but... why not?
Even in Jupiter can be life. Under all the Jupiter gas (JUpiter is a gas planet) the enormous preassures of their atmosphere make the gas became liquid, and in that liquid can be life. That it's really really difficult, more that the methane seas in Titan, but... why not?
Out of the Solar System we have find 759 planet (called exoplanets). In some of them can be life.
The most eye-catching are Gliese 581 g, HD 85512 b and Gliese 581 d.

The scietists must to continue searching and finding exoplanets, because I can't belive we're alone in the Universe (and the panspermia, theory that propose the life in the Earth is because microorganism came here with meteorites and rest here until today and they have gone evoluted, it's not true).

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