Are there any planets suitable for human habitation outside the solar system?

The planet is 190 trillion kilometers away from the earth. Its surface temperature is similar to that of the earth and may be suitable for human habitation

Is the earth the only planet in the universe that humans can inhabit? A few days ago, scientists announced that they had discovered for the first time a planet outside the solar system that may be suitable for human habitation. Its temperature and volume are estimated to be similar to those of the Earth, and it may also have liquid water.

This discovery is considered "an important milestone in the search for life in the universe."

Earth's "partner" found outside the solar system

According to the Southern European Observatory website, this newly discovered planet was named "581c". It orbits a red dwarf star called Gliese 581. Red dwarfs are low-energy, small stars. Red dwarfs emit faint red light and last longer than the Sun. Gliese 581's mass is 1/3 that of the Sun, and its brightness is only 1/50 that of the Sun.

The "581C" planet is about 190 trillion kilometers away from the Earth. Its mass is about 6 times that of the Earth. Its surface temperature is estimated to be between 0 degrees Celsius and 40 degrees Celsius, which is equivalent to the surface temperature of the Earth. So far, all 220 extrasolar planets discovered by astronomers are either too hot, too cold, or too large and have too thick atmospheres to have a habitable environment similar to Earth. The newly discovered planet "581c" seems to be just right, at least scientists currently think so.

Looking forward to discovering liquid water and life

In addition to the suitable temperature, "581c" may also be filled with liquid water. Stéphane Udry, a Swiss astrophysicist who led the observations, said the hypothesis was based on theories of planet formation and not on any evidence.

Delfos of the University of Grenoble in France said: "It is well known that liquid water is a necessary condition for the emergence of life. This planet is similar to the Earth in temperature and other conditions, and is likely to be a good candidate for future searches for extraterrestrial life. "An important target." However, Malang, a former astronomer at NASA, believes that it is too early to tell whether there is water there. The famous astrophysicist Hawking said in an interview: "I expected that there would be planets similar to the Earth, but whether there is life there is another question.

It is reported that scientists want to photograph "581c" Spectral pictures will have to wait another 20 to 30 years. Through the spectrum of the planet, scientists will be able to discover whether there is water and extraterrestrial life on the planet.

This is a gratifying discovery

It is reported. , “581c” was observed by an observation team composed of 11 European scientists using the La Sila Telescope of the European Southern Observatory in Chile. Mayor, a member of the team and an astronomer at the University of Geneva, said: “This is our search for the Earth in the universe. An important step in extraterrestrial life. This is a welcome discovery, but we still have many questions to answer. "The research report has not yet been published publicly, but has been submitted to the magazine "Astronomy and Astrophysics". According to China Daily

"581c" Immigration Instructions

The discovery of "581c" is not only It excites the astronomical community and cheers those with alien "immigration dreams". However, before setting off, you must understand a few important facts:

"581c" only takes one revolution around the star. In 13 days, your age will also increase faster.

The acceleration of gravity on "581c" is 1.6 times that on the earth. Sitting on it, you will feel that your weight has increased by 0.6 times. /p>

"581c" is 14 times closer to its star, Gliese 581, than the Earth is to the Sun. From the perspective of "581c", the size of the star in the sky is larger than the moon we see on the Earth. It is 20 times larger and will receive a lot of radiation from the red dwarf star.

"581c" will probably not rotate, so that half of it will always be daytime and the other half will always be nighttime.

"581c" is about 20.5 light years away from the earth, which is equivalent to 120 trillion miles. From the perspective of the Milky Way, it is not far from the earth. Gliese 581 is also one of the 100 stars closest to the earth, but it is not suitable for human beings' current transportation means. Said it would take astronauts 5 billion years to get there.