The microbes on the earth reflect the energy out of purple light. Later, as the earth grows slowly, these organisms are also constantly changing, and the temperature on the earth also slowly decreases, about 20 After hundreds of millions of years of freezing, we ushered in the explosion of plants and the evolution of animals, which eventually formed our present planet. Therefore, scientists believe that planets that can show a purple color in space today are very similar to the situation when the earth was first born. It may gradually evolve into life forms like ours in the future. .
purple planet
New scientists report that you may find alien life on a purple planet. There were purple bacteria in the first life that ruled the earth 3 billion years ago. If any Earth-like system exoplanet has similar bacteria, then this unique hue should be clearly visible from outer space.
Previous studies have shown that we may be able to detect the infrared signature signal of the vegetation outside the system planet , mainly based on the signals emitted by trees and other plants on the modern earth. Other studies have also hinted at monitoring the gas released by the extraterrestrial atmosphere.
But we are more likely to find microorganisms, because these life forms exist forever on the earth, until more life forms begin to evolve, they can still survive for a long time after the extinction of complex life forms.
Canary Islands Esther Sanromá of the Institute of Astrophysics and her colleagues are curious whether this type of microorganisms that existed on the early Earth will release unique signal characteristics ,It can be observed from a long distance. If the answer is yes, then we may be able to detect signals from similar microorganisms living on distant planets.
extraterrestrial imprint
They created an exoplanet model similar to the early Earth, and then considered several scenarios, such as the distribution of continental plates, cloud cover, and microorganisms living on land Still the ocean. They found that if purple microbes live on land or near nutrient-rich coastlines, they will produce indicators in the light and be reflected by the planets. If they only live in the ocean, then this color will be difficult to see.
“The world of purple bacteria may show us very interesting spectral imprints,” said Lisa Kaltenegger of the Max Planck Institute for Astronomy in Heidelberg, Germany . She was not involved in this research.
The James Webb Space Telescope, which is expected to be launched in 2018, will be able to monitor such signals as long as the purple planet’s star system is not too far away. The star must be small enough not to obscure the light of the surrounding planets. Otherwise, we can only wait for the next generation of advanced telescopes, which will be more sensitive and able to filter the dazzling light from brighter stars.
There are many purple planets in the universe?
According to the current observations, only the earth has given birth to our human civilization. In the past few years, we have been working hard to find other planets. In the past few years, I may have found too many signs of life on other planets.But their technology is not as powerful as ours, unlike us humans that can fly out of the earth on a spacecraft.
Everyone bought a globe when they were young. Looking back on the surface of the area where the account was opened, the color of the earth is actually blue, because 3/4 of the earth is water, and the color of sea water is blue. Some of them are green. Green is our land and plants on our land. I think these are all known.
Human living conditions, in fact, everyone knows that we need sufficient oxygen and water, and if the temperature is still too high or too low, we humans will not be able to survive, and so far we humans have produced many planets without a planet We lived here at the time.
However, recently some scientists have confirmed that the earth was not in this color at the beginning. What color was that? It was purple, because at the beginning of the most primitive stage of life on the earth, it was not humans, but some microbes. Ultraviolet rays, so the reflected light is also purple, and then slowly fades out of the plant, it will turn green.
Then there must be many people who will ask, then after we go to the universe to find a purple planet for a while, will that planet be suitable for us to live in? And that planet will be suitable for us to live in? It will become a second very civilized planet. You think I don’t know these things. Actually, the current scientific research also thinks so.
They are also working hard to find a second planet suitable for human habitation, and they are working hard to find civilizations other than the earth, because the universe is too big, and we humans have too little exploration of the universe. It's not just that it's just the beginning.
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