Emphasizing the optimistic view that our Milky Way attracts with Earth-like aquatic exoplanets, a new research paper from the University of Copenhagen believes that a deeply harborsing oceanic world Earth-like landscapes in great abundance.
According to the intriguing study submitted to the online journal Science Advances, Earth, Venus, and Mars were formed by tiny dust particles containing ice and carbon, which may also be true of multiple genes. other planets in the constellation.
It has long been thought that a life-sustaining planet needs the presence of water, and that the Earth was fortunate enough to be blessed with the precious material through the occurrence of an asteroid. ice or large comet. But scientists at the University of Copenhagen’s GLOBE Institute are shaking things up by suggesting that H2O may be present at the birth of a planet, which, according to their findings, is true for Earth, Venus , and Mars.
“All of our data shows that water was part of the Earth’s building blocks, right from the start,” said lead author Dr Anders Johansen of the Center for Star and Planet Creation. water molecules occur frequently, there is a reasonable probability that it applies to all planets in the Milky Way. The crucial point is whether melting water is present at the distance of the planet from its star. “
Using a new computer model, Johansen and his team have compiled new estimates of how quickly planets are created, and what essential building blocks are present in childhood. As a result of their research they concluded that the millimeter-sized particles of ice and carbon dust were commonly found in the young Milky Way golden stars, which collapsed and accumulated to form the base of the Land was given away about 4.5 billion years ago.
“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 filled with ice and carbon. , “adds Johansen.” The Earth then grew faster and faster until, after five million years, it grew as large as we know it today. Along the way, the surface temperature rose suddenly, causing the ice in the pebbles to evaporate on the way down to the surface so that, today, it is only 0.1 percent of the planet is made up of water, even though 70 percent of the Earth’s surface is covered with water. “
The reasoning continues, since planets in the Milky Way appear to be formed by identical water and carbon building blocks, it is a good bet that this similar process will occur at a much higher rate in other neighboring stars if the temperature supports life.
“With our model, all planets receive the same amount of water, which shows that other planets may not only have the same amount of water and oceans, but also the same amount of water. of continents as they are here on Earth, ”said the co-author. Martin Bizzarro. “It provides good opportunities for life to emerge. A water-covered planet would undoubtedly be good for sea creatures, but it would provide a less-than-perfect setting to create civilizations that watch the universe.”
Future space telescopes with next generation optical devices may provide additional opportunities for Johansen and his crew to enter the depths of a home galaxy to discover such an aquatic world with distant stars.
“The new telescopes are powerful,” Johansen notes. “They use spectroscopy, which means by observing what kind of light is blocking it from the orbit of the planets around their star, you can see how much water there is. It can tell us something about the number of oceans on that planet. “