To search for organisms in space, it's helpful to know the recipe for living things on our planet.
, a professor of chemistry at the Ludwig Maximilian University of Munich in Germany, offers a different description. He says life is a “self-sustainable reaction network,” in which organisms have the processes necessary to survive and adapt. This is in line with the. Having a clear idea of what makes up life, and the conditions needed to sustain it, helps astronomers get a better picture of what to look for when searching for life on other planets.
a chemistry professor at Tokyo Institute of Technology and president of the International Society for the Study of the Origins of Life, who was not involved in the study.. Lava shaped the continents, and volcanic gases helped create oceans and atmosphere. Early Earth may have had another important boost, too, in the form of chemical-rich meteors falling from the sky.
To determine the interplay of space rocks and Earthly eruptions, the authors simulated the conditions of our young planet in the lab. They purchased chunks of two iron and stony meteorites and dissolved them in acid to create a solution, and soaked in crushed samples of volcanic ash and minerals assumed to have been present billions of years ago. The result was a model of meteorites crash landing on volcanic islands.
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