Scientists believe that microbes on Earth help elucidate the state of life in the early stages of the planet, and this information is available elsewhere. It may help you to recognize the signs of life on the planet.
Riverside California University researchers observe the rhodopsin proteins of microorganisms around the world and are a type of environmental archaea to distinguish between species. Created a family tree (a unicellular organism that can survive in extreme environments) lived billions of years ago.
"Life as we know it is not only life itself, but also an expression of the state of our planet. It revives the ancient DNA sequence of one molecule, with the biology of the past. We were able to link to the environment, "said Betul Kacar, a space biologist and research leader at the University of Wisconsin-Madison.
Scientists say that billions of years ago, before the Earth formed the protected ozone layer, the microbes lived a few meters below the surface of the primordial ocean and were blue to sustain life. I hypothesized that it could only absorb green light.
However, since the Great Oxidation Event over 2 billion years ago, modern microorganisms have evolved and can absorb many colors of light.
"Our research shows for the first time that the behavioral history of enzymes is suitable for evolutionary reconstruction in ways that traditional molecular biosignatures do not," Kacar said. I am saying.
How is this life? Will it help you find out on other planets?
Researchers are working on the idea that the early Earth was essentially an alien environment. It's very different from what we humans (and microbes) are experiencing today.
The Precambrian is the earliest geological age of the Earth, according to National Geographic. It extends from the time the Earth was created about 4.5 billion years ago to the emergence of multicellular organisms four billion years later.
During this time, the Earth is covered in a pristine ocean, and scientists hypothesize that it gave birth to the first unicellular organism. From there, a major oxidation event took place, forming the ozone layer, giving way to multicellular organisms.
Who says this can happen on a planet that isn't happening or is orbiting a distant star that's not much different from ours?
This Recent study shows scientists understand whether life can exist on planets and satellites like Earth. It has the potential to help you. The universe.
"Learn important things about how to find and recognize life elsewhere by understanding how the creatures here have changed over time in different environments. You can, "says astrobiologist and co-author Edward Schweeterman. Of research.
So many planets Very little time
The discovery was made thanks to a new machine learning method called ExoMiner that distinguishes stars and planets far away from the universe.
ExoMiner examines data previously collected by NASA's Kep1er and K2 missions to decipher what a planet is. The mission collects data on thousands of stars, each of which can host multiple exoplanets.
"Examining large datasets is a very time-consuming task. ExoMiner solves this dilemma." NASA releases news release.
On average, it is estimated that every star in the galaxy has at least one planet. According to NASA, this means that our galaxy alone has billions of planets, many of which are within the size of the Earth.
NASA is not considered to be Earth-like or habitable on any of the newly identified planets Said.
NASA scientists said they used Kepler's data to train ExoMiner so that information learning could be transferred to other missions.
"There is room for growth," said Hamed Valizadegan, ExoMiner project leader and machine learning manager at the Ames University Space Research Association.
Megan Ziegler contributed to this report. This story was reported by Los Angeles.
