Find the first evidence that 'Solar System 2.0' has water

With some observation techniques, experts found that several planets in the star-planet system Trappist-1 contain the most important thing to maintain life - water.

In the early months of 2017, NASA announced the discovery of Trappist-1 - a star-planet system containing 7 globules of the same size as Earth. In it, at least 3 planets carry the potential to own liquid water.

Many doubts were then raised about the life-sustaining ability of planets 40 years from this light. Recently, however, a research group claims to have found evidence of this.

Trappist-1 star-planet system.

Specifically, the team led by Vincent Bourrier, a Swiss astronomer at Observatoire de Genève University, used the spectral imaging system (STIS) from the Hubble Space Telescope. The group wants to understand the density of the interaction of ultraviolet rays between planets in the system - which can reveal their atmospheric environment.

" Ultraviolet rays are an important element for the planet's atmosphere," Bourrier said.

"It can break down water vapor molecules in the atmosphere, make hydrogen and oxygen."

With STIS, Bourrier said they could determine the presence of hydrogen around the atmosphere of each planet, and thus prove that there is steam.

As a result, experts identified the two closest planets as Trappist-1b and Trappist-1c, which are more likely to contain a lot of water - equivalent to 20 times the amount of water in the Earth's oceans.

Trappist-1b and Trappist-1c are more likely to contain lots of water.

However, the remaining planets may not be so lucky. According to Bourrier, all three planets in the Goldilock region, 1e, 1f and 1g, are likely to lose a lot of water, although there may still be water on the surface.

Calculations of water loss rates and geographic water regeneration rates all support the group's hypothesis. However, they could not draw conclusions based on telescopes and data.

Moreover, even if the Trappist-1 system contains water, it is unlikely that the planets here can stay. The reason is because they are so close to the host star, and the solar storm can make things impossible.

Trappist-1b can hold 20 times more water than Earth.

But anyway, the experts are still researching, because this is still the biggest hope of people.