The discovery of the first planets in the TRAPPIST-1 system has been widely reported around the world. Soon after, it turned out that the system includes up to seven Earth-like exoplanets. This is what made scientists decide to explore this region of space closely. New research relates potential The presence of water on these planets.
Scientists have looked at seven exoplanets from the TRAPPIST-1 system and said so The outermost one contains liquid water. The conclusions were based on simulations regarding the loss of this resource.
The first three planets orbiting close to the star are unlikely to contain any water at all. This is due to the fact that at the beginning of their existence they had to have energy tens of times greater than that of the Earth. It has been lost over time and is unlikely to be preserved today. However, the situation is different for distant exoplanets. It has been calculated that these four worlds would have lost water of about 8, 4.8, 3.8, and 0.8 volumes of Earth’s oceans during their existence.
In addition, three of the four exoplanets farthest from the star are located in the so-called Environmental surroundingsIt is an area that may have suitable conditions for life known to us on Earth. However, this does not mean that there are any living organisms on planets containing TRAPPIST-1.
At the center of TRAPPIST-1 is an extremely turbulent red dwarf star. This means that the planets orbiting around it do not face it easily. It is a body other than the Sun that exposes its planets to unfavorable conditions. The habitable zone is much closer to the star than in our system.
The star from TRAPPIST-1 is not young, as it is 7.6 billion years old. For comparison, the age of the Sun is estimated at about 4.6 billion years. The object was discovered only in 1999. After about a dozen years or so, the first exoplanets were found there. The system is very close to us, because we are “only” far from it About 40 light years awayWhich in the case of cosmic distances can be considered our backyard. Of course, there are currently no technologies that would allow us to get there in a relatively short time.
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