There are a lot of water out there but not everywhere and in the same quantities. For example, data collected in 1999 by the mission SWAs Submillime-ter-Wave Astronomy Satellite-attached by Nasir Al Harvard-Smithsonian Center for Astrophysics, revealed several surprises.The project was designed to study the formation of stars in the dark and dense clouds of interstellar gas primarily through emissions of water, molecular oxygen, carbon atoms and carbon monoxide.
From the comments were striking for the contradictory data. In regions whose temperature was 30 degrees above absolute zero (-273.15 ° C) was much less water than expected. However, in areas of dense clouds where new stars are born and gas is thousands of degrees, the amount of water is up to 10,000 times higher.
You do not have to move away from our little apple cosmic. In 2000, a group of British scientists found that crystals of salt water contém within meteorites. The rocks were originated 2 million years after the solar system formed. Something similar happened with the Monahans meteorite, fallen in Texas in March 1998, and Zag, named after the Moroccan city in whose vicinity was precipitated in August that year. And are not alone. Indeed, comets are true costaleros of ice water. When our planet had a few million years, its surface was subjected to an intense bombardment of these objects, which deposited approximately 30% of the water that now exists on Earth. So things are, one third of the precious liquid to our bodies has a cometary origin.
The asteroid, primarily located between the orbits of Mars and Jupiter, also carrying his water droplet, from 0.5% of meteorites siliceous 20% characteristic of carbonaceous condritas. These are the oldest of all and represent 70% of that fall to Earth.
