The planet may have real life

Recently, the magazine Astronomy and Astrophysics (roughly translated as Journal of Astrophysics) published 2 independent and detailed studies on 2 planets of life like Earth.

As a result, these two independent studies have all yielded results: Gliese 581c is too close to Gliese star so there cannot be life while Gliese 581d can have life. However, the environmental conditions on the planet Gliese 581d are too harsh for complex life to appear.

Last April, a group of European astronomers announced that they discovered two life-like planets like Earth.

There are 2 planets orbiting the red dwarf star M Gliese 581, with the mass of 5 to 8 times the earth. These two stars (now known as Gliese 581à Gliese 581d) are the strongest candidates for the title of planet of life.

Looking for life similar to Earth.(Artwork: Spacedaily)

With the work of two international research groups, one led by Franck Selsis and one led by Werner von Bloh, two different views of life on these two ' super-earth ' planets. They assessed the boundary of the orbital life of Gliese 581 and pointed out the extent to which water exists on the surface of the planet.

F. Selsis and colleagues calculated the existence of an atmospheric planet from different distances to this star. However, if the planet is too close to the star, water on the surface can be evaporated and the same life on Earth will not exist.

W. Bloh and his colleagues studied the closer area of ​​the life floor, where the same photosynthesis on Earth could exist. Accordingly, this biological process requires the presence of CO ₂ in the atmosphere and water on the planet.

Under the super-Earth standard conditions, they estimated the amount of carbon dioxide (emitted from volcanoes and pressure streams) and ' bogs ' (which contain the total amount of CO2). The main result from the study is the emergence of ' stable equilibrium ' between carbon dioxide ' bogs ' and the atmosphere, creating an oceanic system (similar on Earth).

The result is that the two groups have been Gliese 581c too close to Gliese star so there cannot be life while Gliese 581d can have life .

Planet d has a tidal phenomenon, like the Moon of the Earth, which means that one side of the planet is night. Therefore, strong winds can make a difference in temperature between the planet's day and night halves. Life can form from the fragile rays of this particular type of climate.

One more information, the data of group 1 showed that planet d can be permanently separated and return to the equator that contains life in its spinning journey. However, even under different conditions, planet d may still have life if its atmosphere is thick enough. However, the living conditions on planet d, however, need to be different from those already on earth.

Finally, the viability of life on 1 of the 2 planets is particularly attractive to the central star, the M-type red dwarf. About 75% of the stars in the galaxy's range are M stars, the older stars (can be up to 10 billion years), stable and have hydrogen.

Both studies show that Gliese 581c and Gliese 581d may be the target of ESA / NASA's leading universe to seek life similar to Earth.

Mai Khuyen - Bui Thanh