What is the significance of NASA s discovery of two super Earths only 33 light years away?

Now in the US space agency, two super-Earths relatively close to the earth have been discovered, which are similar to the earth in terms of gravity, atmosphere, and cosmic environment. DistanceThe Earth is about 33 light-years away, which is relatively close for the vast universe. <>

A light year is a distance, the unit is the year that light has walked, the distance traveled by time, this is the distance, the simple understanding is to run at the speed of light, and the earth will be able to reach the two super earths in 33 years. But the two super-Earths are only similar to the Earth in terms of the general environment, and people can't effectively detect them, only through observation, as for the real data on them, it needs people's detectors to reach that location. But with the current speed of human aircraft, it is clear that there is still a long way to go from the speed of light.

But it's always a good thing to be close, because we can observe the changes on these planets more clearly through astronomical telescopes, although we can't get direct and specific data, but we can always get some useful information from years of observation. There is a mass extinction every few years on Earth, which means that no life on Earth is immune to this, and almost 90% of all species disappear from each mass extinction. So in order to avoid this kind of tragedy, we are still looking for a way back for ourselves.

The other new earth that has been mentioned in the movie, that is, the new home of human beings, is a work of art created by people, but to a certain extent, it is also people's yearning for another world. That is, people know that although the earth seems to be harmonious now, once a large-scale natural disaster occurs, with the current level of science and technology of human beings, they are simply powerless in the face of nature. We must find an existence that can replace the earth for human beings as soon as possible, and whether we can succeed in putting it back first, we must at least try it first.

It helps to explore outer space, explore extraterrestrial life, study the origin of mankind, find other planets habitable by humans, and explore the mysteries of the universe.

The greatest significance of this discovery is that it provides the possibility for human beings to travel by scheming or colonizing the planet in the future.

This is already very small on a cosmic scale, and it is also one of the closest multi-planetary systems to the solar system known to mankind. Although it is still not possible to observe at this distance up close, it is expected that more significant discoveries will be made in this system in the future with the equipment available to humans. If the two exoplanets have atmospheres, when they transits again, the light from the host star will travel through their atmospheres to Earth for astronomers to analyze.

Through such spectral analysis, astronomers can first determine whether they have an atmosphere or not, and secondly, they can judge whether they have substances such as water in their atmosphere, and thus judge their habitability.

With the rapid development of science and technology, there has been more and more discussion about "space migration" in recent years.

According to astronomers' speculation, there are more than 100 million habitable planets in the universe, and many of them are "super-Earths".

Astronomers used the Earth as a basis and measure to give the concept of "terrestrial planets", and listed four major conditions that terrestrial planets must meet in order for life to exist: organic matter, liquid water, atmosphere, and a star that can provide stable energy.

On this basis, if the mass of this terrestrial planet is still very large, then it is the so-called "super-Earth". So have we ever discovered a "super-Earth"? The answer is yes.

Scientists have discovered an orange-red star with a mass of about 86% of the Sun, and formed a star system around it.

One of the planets in the habitable zone of the galaxy is its third planet, HD 69830 D, with a mass of about 17 Earths. After analysis, it is very likely that there is life on this super-large "super-Earth". And it's only 42 light-years away from Earth, and it could one day be a human on the planet.

After learning about this, many scientists were overjoyed at first, but as the exploration deepened, they became worried.

Planet HD 69830 d is about 7 billion years old, while Earth is about 4.6 billion years old, in other words, if it evolves the same as Earth, then the technological civilization created on this planet will be 2.4 billion years ahead of us.

To put it more bluntly, once there is an advanced civilization on HD 69830 D, then it will pose a huge threat to humanity. But then again, these are just speculations by scientists based on the available science and technology.

To sum up, the road of "space migration" of human beings still needs to be explored, and in order to provide more time for it, what we can all do is to protect the ecological environment of the earth. What do you think about this?