Like the Mars Rover Sustainability motors around looking for evidence of past life on a now largely dry planet, some researchers ask, can we be sure that the vast- dry some planets in our galaxy?
One common opinion among exoplanet experts is that most of the planets got their water through an opportunity struck early by a frozen asteroid. But researchers from the GLOBE Institute at the University of Copenhagen offer another scenario, based on the destructive ice grains of ice and carbon that orbit the young stars in our Milky Way galaxy.
If masses of these grains are originally introduced into a planet, it does not matter if there is water in the planet. It is a matter of chance if it is losing water, which seems to have happened, for example, to Mars. They explain,
“All of our data shows that, from the beginning, water was part of the Earth’s building blocks. And because the water molecule is a frequent occurrence, there is a reasonable probability that it will apply to all planets in the Milky Way. The point is that the presence of melting water is the planet’s distance from its star, ”said Professor Anders Johansen of the Center for Star and Planet Creation who led the study published in the journal Science Advances.
Using a computer model, Anders Johansen and his team have worked out how fast planets are created, and where building blocks come from. The study shows that millimeter-sized particles of ice and carbon dust – known to orbit the young stars on the Milky Way – were formed 4.5 billion years ago. the creation of what would now be Earth.
“Up to the point where the Earth had grown to one per cent of its current mass, our planet grew by capturing masses of rocks full of ice and carbon. The Earth then grew faster and faster until, after five million years, it became as big as we know it today. Along the way, the surface temperature suddenly rose, causing the ice in the pebbles to evaporate on the way down to the surface so that, today, it is only 0.1 sa percent of the planet is made up of water, even though 70 percent of the Earth’s landmass. a surface is covered with water, ”says Anders Johansen, who joined his research team in Lund ten years ago the theory that the new study is now proving.
University of Copenhagen – Faculty of Health and Medical Sciences, “The Milky Way could go up with planets with oceans and continents like this on Earth” at ScienceDaily (February 22, 2021) The paper is open.
Given that water is found throughout our galaxy, the researchers suggest, it is quite possible that most of the planets in our galaxy formed as Venus, Earth, and Mars did from about 4.5 billion years ago. In that case, many could be as aquatic as the Earth. Venus ‘wind was blown away from Venus’ water. Mars’ water may be trapped in minerals or it may have fled into space after Mars lost its magnetic field. The Earth retained the magnetic field that holds the water in. But many other planets in the galaxy may also be preserved.
Anyway, there may be a lot of water on the planet beneath the surface that has not been removed). One idea about outer life – and even sensible outside – is that we find them living in the oceans beneath the surface of planets and mountains. The Jupiter Europa and Ganymede hills are thought to have large amounts of groundwater. The same may be true of many exoplanets and exomoons. Even Mars may have subsurface water:
Some researchers believe that intelligent life is unlikely in these aquatic worlds because aquatic life forms, for example, may never try to use technology. Consider, for example, dolphins and octopuses. However, others argue over that point. Only further research on exoplanets could tell us.
Which Brings Us Again to Sustainability:
Here are some audio recordings from Mars.
Note: The Earth-like exoplanet image above is a stock image with elements provided by NASA, © sdecoret / stock.adobe.com
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