Discover planetary system with 7 copies of Earth!

Seven planets orbiting a star in the Aquarius constitute more water than Earth, and also have a solid core and our planet-like atmosphere.

The research team led by a scientist who specializes in extrasolar planets Simon Grimm (University of Bern, Switzerland) has identified the incredible nature of 7 planets belonging to Earth only 39 light years away. , in the constellation Aquarius.

TRAPPIST-1 is also the name of the central star - an extremely cold dwarf. 7 planets orbiting it all have solid cores, atmosphere and water like Earth. Meanwhile, in our Solar System, scientists are still struggling to find very limited sources of water on neighboring bodies.

Image of 7 planets belonging to TRAPPIST-1 system and our earth - (graphic image of ESO).

It is possible to call these 7 planets 7 ocean worlds. They all have a slightly smaller size than Earth, the density of matter in the planet is about 0.6 to be equal to the density of the earth but the water is much more abundant. Some planets have up to 5% of water, 250 times more water than Earth.

Of the 7 planets, TRAPPIST-1b and TRAPPIST-1c near the most central star have a hot and humid climate, while some of the most distant planets may be the icy world but still possess a liquid ocean under the tape.

TRAPPIST-1e, the fourth planet in this planetary system, is believed to be the most Earth-like. It is more dense than Earth, probably due to heavier iron core. It may also have a thinner atmosphere and less water than its brothers but is equivalent to the Earth.

The group of scientists used the TTVs system - a modern technique that observes small variations in the amount of time when a planet cuts through the seam between the central star and the Earth. From there, they determined the mass, composition and density of components in the planet.

The research has just been published in the scientific journal Astronomy & Astrophysics. While the publication does not address the possibility of extraterrestrial life, experts in the field believe that the data are sufficient to trigger studies of the viability of life in these seven planets. Because in space science, where there is water - especially liquid water - there is a very high chance of survival.

TRAPPIST-1 has been known before but people do not understand much about the planets it owns. However, preliminary studies based on the impact of central stars on planets show that there are at least two or even seven planets in the "habitable zone".