Purple planet is a place of life!

The early Earth was purple and so were the planets that started another life, according to a new US study.

Research by microbiologist Shiladitya DasSarma (Maryland School of Medicine, USA) and Dr. Edward Schwieterman (University of California - Riverside Campus, USA) provide suggestions for the search for extraterrestrial life: just target the purple planets .

According to the authors, romantic lavender purple is a sign that the planet began to develop life. The Earth several billion years ago, when it started life, had the same color. Many astronomers try to find green life in space but that may be a wrong way.

Purple planets are planets owning primitive life?- (Artwork from Internet).

Purple covered the Earth and the early before the planet's plants were sufficiently evolved to harness the energy from the sun through chlorophyll. Previously, purple was the color chosen by primitive creatures to harvest solar energy.

To this day, the ability to exploit light through purple pigments is still common in many bacteria and unicellular organisms belonging to the Archea group. These purple microorganisms are found everywhere, from the ocean to the most arid and cold valleys in Antarctica. Purple pigments are also found in the visual system of many animals and there is evidence that it appeared very early on the tree of life.

In addition, there is evidence that purple salty microorganisms called halophiles are related to the earliest life on earth. These organisms grow around the vents of methane gas circuits beneath the ocean.

The authors Schwieterman and DasSarma assert: "Regardless of whether the first life on Earth is purple, it is clear that purple life is suitable for some well-developed microorganisms and alien life can are using the same strategy ".

According to the two researchers, astronomical observation technology today allows people to study the surface of planets outside the solar system. Therefore, what they need to do is to look for the purple color of life on them, not the blue like the modern Earth.

Last year, another research group from the Australian National University (ANU) said that after they analyzed the ancient "chlorophyll" on 1.1 million-year-old fossils.