Astronomers find exoplanets, or life

In order to gain a deeper understanding of the universe and search for humanity's future second home, scientists have been exploring a variety of celestial bodies, using ground and space instruments such as the Hubble Telescope and China's FAST Eye to make new discoveries.

With the continued development of technology, scientists have been able to see hundreds of thousands of light-years object, study distant black holes and the pulsar phenomenon. More important is the ability to observe whether there is similar to our earth planet. There has an international research team, led by the university of Montreal, announced that they have found a possible life on an ocean planet.

Water is the source of all things, the original life on earth is evolved in the sea, on the earth, although the types of biological form and each are not identical, but without exception, they don't require water biochemical reactions in the body without the participation of, maybe someone will say 39bet-xsmb-xổ số tây ninh-xổ số binh phước-xổ số binh dương-xổ số đồng nai, water bears such creatures could survive the high temperature of a few baidu, don't they don't need to water?

Actually under the environment of high temperature water shortages, water bears dormant dormant, need activity regained consciousness, still can not do without water, some microbes don't need oxygen, but never do without water, water on the one hand, to maintain the energy of the reaction in the body, on the one hand, also can stable the temperature of the organism, maybe the universe, life will be different from life on earth.

But as Earth is the only planet in the universe where life is known to exist, the search for extraterrestrial life should be based on the conditions of life on Earth.

885a20004ac404c748c6e7761a836fc3Water is composed of the elements hydrogen and oxygen. Hydrogen is widespread in the universe, so water is not unique to earth. There are a lot of planets in the solar system that have a lot of water, such as the back of the moon. There is water ice, drift of comet also has water ice cores, but these solid against biological reproduction, so we focus more on liquid water.

Ganymede is one of the moons of Jupiter, it is about 5268 kilometers in diameter, is two 5 of the earth, although the size is smaller than the earth, but its water content is about 26.5 times of the earth, but due to the ganymede too far from the sun, causing the earth's surface is in extremely cold all the year round, the temperature was only - 163 ℃, so the liquid water deep beneath the earth's surface, It can be hundreds of kilometers thick.

Although Ganymede is rich in water, it doesn't have water on its surface, and there's no other planet in the solar system that's covered in a lot of water other than Earth, so scientists turned to exoplanets.

Using the TESS telescope, an international team led by Kadioux, a doctoral student at the University of Montreal and member of the Exoplanet Institute, found an ocean planet covered in water: Toi-1452b, located just 100 light-years from Earth in the northern constellation Draco, was recently published as a paper in the Astronomical Journal.

Toi-1452b is part of a binary star system, that is, there are two stars in the galaxy, ToI-1452 and TIC 420112587. They are both red dwarfs, about 14.5 billion kilometers apart, twice the distance from the Sun to Pluto. Toi-1452b orbits the red dwarf.

Toi-1452 is a faint star with a quarter the mass of the Sun and a slower rate of nuclear fusion, so its surface temperature is just 2,900 degrees Celsius, 2,600 degrees cooler than the Sun's.

That means ToI-1452b needs to be close enough to the star to get enough heat to maintain surface temperatures, which it is. It's only 9.12 million kilometers from its host star and orbits it in just 11 days, a distance that makes up for the host star's imperfections and makes ToI-1452b potentially habitable.

Team spent more than 50 hours to confirm the TOI - 1452 - b1 concrete data, finally to make sure it is much larger than the earth, was 70%, the size of the planet, but the quality is only for five times that of earth, from the point of radius and the quality, its density is much lower than a composed of rock and metal planet, there are only two may result in such a situation, One is that TOI-1452b is a gas planet, and the other is that its entire planet is 30% water.

If TOI-1452b is a gas planet, it's too dense, so most of its mass should be made up of stuff lighter than rock but heavier than gas, and it's right in the galaxy's habitable zone.

So on TOI - 1452 - b after internal modeling analysis, the researchers believe that about 30% of the planet is liquid water, is a veritable ocean planet, by contrast, is a relatively dry planet earth, while 70% of the earth's surface is covered by the sea, but the actual water constitutes only a small part of the earth's mass: less than 1%.

As we said above, water is the source of all things, and life is possible with water, so could there be an alien civilization in TOI-1452B?

Scientists also urgently want to know the problem, but now the telescope to carefully observed exoplanets, even extrasolar stars, is just one bright spot, but some of the most sophisticated spectrometers can analyze their atmospheric composition. The metabolism of life will produce some special material, oxygen and methane. For example, they leave a mark in the atmosphere.

The Webb telescope, which carries an advanced infrared spectrometer, is expected to look for evidence of alien life by analyzing the spectrum of planetary atmospheres.

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