Has the United States discovered another planet suitable for human life?

WASHINGTON, Dec. 5 (Xinhua) -- NASA announced in a statement on Dec. 5 that it had confirmed the first Earth-like, habitable planet outside the solar system through the Kepler Space Telescope project.

Scientists say the planet's surface temperature is about 70 degrees Fahrenheit (equivalent to 21 degrees Celsius), making it very habitable for living things. In addition, there may also be liquid water on the planet, which is considered by scientists to be a key indicator of the existence of life.

The planet, named Kepler-22b (Kepler-22b), is about 600 light-years away from Earth and is twice the size of Earth, and it is the closest planet to Earth in terms of size and orbit that has been confirmed, and it orbits a Sun-like star every 290 days as Earth orbits the Sun.

However, scientists do not yet know whether the planet is mainly composed of rocks or gas or liquid.

In addition, NASA scientists announced the discovery of a total of 1,094 new planet candidates since February of this year, bringing the total number to 2,326. However, so far, only 29 planets, including Kepler-22b, have been confirmed to be true planets.

The most suitable planets for human survival are: Alpha Centauri, Gliese 581g, Gliese 667c, Kepler 4426, Kepler 186f.

1. Gliese 581g

Glizer 581g was discovered by astronomers in the American "Rick-Carnegie exoplanet search" project, Gliese 581g has a diameter about twice that of the Earth, a mass about twice that of the Earth, and an average surface temperature of minus 31 degrees Celsius to minus 12 degrees Celsius, which may be suitable for human habitation.

2. Gliese 667c

GLISE667C is 85% similar to Earth, it receives light from its parent star, which is equivalent to 90% of Earth's, its surface temperature is slightly higher than Earth's, and it is only 22 light-years away from Earth.

3. Kepler 4426 planet

Kepler-4426 is about twice the size of the Earth, rich in water and sunlight, and theoretically suitable for human habitation, but it is 1,100 light-years away from the Earth, which is too far away.

4. Kepler-186f planet

Kepler-186f, the first planet to be discovered next to a star other than the Sun, is just 492 light-years away from Earth, a planet similar in size to Earth and potentially habitable for humans.

5. Alpha Centauri

Alpha Centauri is light-years from Earth, and Hawking has developed a probe to fly to this planet, which is estimated to be accessible in 20 years, and the planet is also the closest planet to Earth and may be suitable for human habitation.

The planet is located in an extended region of a relatively cold galaxy, and its atmosphere is relatively warm, which happens to allow it to have liquid water. This is the first time that scientists have claimed to have discovered a planet with absolute certainty that is "pleasant and suitable for human migration", and it is also the first terrestrial planet to be discovered outside the solar system. The universe is so vast, I believe that in addition to this planet, there must be many extraterrestrial planets in the universe that are suitable for us to live in, but they have not yet been discovered by us.

In the solar system, Earth is currently the only known planet with life.

Although in recent years humans have been searching for extraterrestrial life, hoping to find the first living celestial body, and at the same time discovering the existence of super-Earths, increasing the possibility of human migration. But most of the time, the "super-Earth" we see is very far away from us. Although the current technology can give a preliminary estimate, there is no way to determine whether it is suitable for human habitation and whether there is life.

According to the astronauts who were lucky enough to fly into space, the Earth they saw in space was a beautiful, crystal clear, and the only living planet, covered with a thin layer of aqua-blue veil.

The earth has always been selflessly dedicated to humanity. However, due to human beings who do not know how to cherish, uncontrolled exploitation and random destruction, not only make the earth's natural resources less and less, but also cause a series of ecological disasters, threatening the survival of human beings. For example, in July 1995, an incident occurred in our country:

Several factories are emitting excessive amounts of sewage and smoke into the ocean and atmosphere, causing massive acid rain to fall and destroying large areas of forests and crops. This not only pollutes the environment, but also causes serious losses to natural resources.

However, while we have found planets outside of Earth that may be suitable for human habitation, with our current level of technology, it is difficult to immigrate there. Therefore, I think we should cherish our planet. After all, we were born and raised here, and she was our first mother.

Now scientists are "looking around" the Earth, focusing on Mars, which is about 53% in diameter and about 11% in mass. This is about to start digging for a "second habitat" or "second earth" for humans. Because humans may move to Mars in the future, and now scientists suspect that there is a high probability of extraterrestrial life on Mars, and there may even be life now, which greatly promotes our interest in Mars.

In the constellation Cygnus, 638 light-years from Earth, there is a planet Kepler--22b, which is twice the size of Earth, with an orbital period of 290 days and a surface temperature of 22 degrees, both in terms of temperature and area. They are all more suitable for human survival. However, because there is no strong magnetic field, it cannot withstand the solar storm generated by the sun like the earth, which will make it very difficult for human beings to survive, and because of the long distance, our current technology does not allow us to explore.

At present, the earth is still the only planet in the world that is suitable for human survival, and human beings have not yet found a second planet that can replace the earth, so we must protect the earth.

No second habitable planet has yet been found; It is believed that with the development of scientific research and technology, under the research of these professions, we will definitely be able to find a planet suitable for human habitation.

The best new home for humanity is the Kepler 22.

Why? Kepler 22 than.

It is the most suitable planet for human survival, and Kepler 22b is about twice the size of Earth.

The same as Earth is his parent planet, Kepler 22, which is also a sun-like star.

According to data observed by the Kepler Space Telescope.

Scientists speculate.

Kepler 22 b is the same as the Earth's atmosphere.

And probably gave birth to the ocean.

It has abundant water resources.

This indicates. If Keebler 22 B has a similar greenhouse effect, then its surface temperature is about 21 degrees.

There are also seasonal variations.

The similarity to the Earth is as high as 83%.

It is worth mentioning.

Keble 22b is 204 times larger than Earth.

It can greatly alleviate the pressure on housing.

Reaching one suite per person is simple.

But unfortunately.

At the current level of human civilization.

It is unrealistic to want to immigrate to Kebler in a short period of time with a ** of 22b.

After all, he is 600 light-years away from us.

Humanity has been looking for a "second Earth" for a long time. Then some people will ask, what are we looking for a "second earth" for? In fact, human beings are not only looking for extraterrestrial life, but also looking for a second home suitable for human survival.

After all, humans cannot live on Earth forever. One day, humanity will march towards the universe. If that day comes, then it is extremely important that humanity's next stop will go.

In fact, at least the current science and technology will not reach Proxima Centauri, so we still need to work hard to improve the speed of development of science and technology.

Currently Earth, and then Titan:

Titan''Titans'') is a moon orbiting Saturn. It is the largest of Saturn's moons. Discovered on March 25, 1655 by Dutch physicist, astronomer and mathematician Christian Huygens, it was the first moon to be discovered in the solar system after the discovery of Jupiter's Galileo moon.

Since it is the only moon in the solar system with a dense atmosphere, it is considered a time machine that helps us understand the early days of the Earth and unravel the mystery of how life came into being.

Titan is Saturn's largest moon and the second largest moon in the solar system, larger than the planet Mercury (although not as massive as Mercury), and second only to Jupiter's largest moon in the solar system, Calymede. But recent observations have also suggested that its dense atmosphere may have overestimated its diameter, and like many other moons, Titan is larger in mass and volume than the asteroid 134340 (formerly Pluto).

Titan has an average radius of 2575 km, a mass of kilograms, and an average density of kilograms of kilometers3. Titan's orbit around Saturn has a half-major diameter of 1221850 km, eccentricity, and the angle of intersection between the orbital plane and Saturn's equatorial plane, with an orbital period of 15 days, 22 hours, 41 minutes, and 24 seconds. Titan's rotation period is the same as its revolution, which is similar to that of the Moon.

Titan has a dense atmosphere, the main components are nitrogen, surface atmospheric pressure Pascal, surface temperature -178 .

Titan's mass is roughly similar to that of Ganymede, Ganymede, Triton, and asteroid 134340. Titan is half water ice and half solid material. There is a solid core at 3,400 kilometers below multiple different crystalline ice formations.

The interior of its core should still be red-hot. While Titan and other moons of Saturn are similar, Titan's core is denser because of its sheer size, which causes gravity to compress its interior.

For the time being, of course, it's Earth, but there's no guarantee that a better planet will be discovered in the future, but I'm afraid neither you nor I can wait for this day to come.

Human beings on the earth are produced on the earth, and everything that human beings want is on the earth.

Trying to find a suitable place for human existence in outer space is nothing more than a beautiful dream; Even if there is a planet suitable for life, it must have its own system and its own life system, and human beings cannot intervene. It's better to protect your planet.

Although it is said that the earth is the universe.

but the earth still has its own special features as the only home of mankind. So what kind of planet can humans survive on, let's find out.

1. The running track is stable

The Earth has a fairly stable trajectory, and it is always revolving around the Sun, which can better ensure the safety of the Earth. If the trajectory is unstable, then the planet will be in turmoil, and the future of the planet itself will be in question, let alone to give birth to life.

2. Don't be too far away from the earth

The distances between the major planets in the universe are quite far away, which has brought some difficulties to human exploration of the universe. You must know that 99% of the planets that have been found to be similar to the Earth before, and other planets such as "Another Earth" discovered by scientists, are too far away from the Earth for people to explore and learn more.

3. There should be liquid water

Liquid water is a relatively basic condition, even if there is no water source, there must be something that can replace the water source, after all, there is a good saying that water is the source of life, at least for human beings.

4. There must be an atmosphere

The earth has a relatively thick atmosphere, and everyone should not think that the atmosphere is useless, the role of the atmosphere is greater than everyone thinks. It can not only effectively fight some cosmic objects, such as meteorites, etc., but also reduce cosmic radiation and a certain amount of solar radiation.

5. The temperature should be suitable

Temperature is also very important, if the temperature difference between day and night is large or the surface temperature is too high, etc., it may affect the birth of life, and humans will not be able to live in it.

6. Appropriate gravitational force

The gravitational pull of the earth firmly grasps the things on the ground, the earth is round, the sea water will not fall, the earth rotates and the house does not fall and other problems are because gravity plays a fixed role, so gravity is also a very important link, there is no gravity or the gravitational force is too small things will fly in the sky.

Of course, there are many more than these that will not be mentioned here, everyone clearly understands how important the earth is to human beings, so we must protect the earth well, so that the earth can be more long-term.

The universe is so big, is there another planet suitable for human habitation?

No habitable planet has been discovered In the solar system, Mars is very similar to Earth, with the same seasons and is also in the habitable zone. However, hundreds of thousands of years ago, due to the cooling of the Martian core, the low gravity caused it to be unable to capture its own atmosphere, causing the atmosphere to be carried away by the solar wind. The surface of Mars has traces of water washing, and the North Pole is covered with ice caps.

However, due to the maximum temperature on the surface of the planet is only minus 20 degrees Celsius, and the thin air, I am sorry to stay on Earth. [Love you] hope it helps.