Thursday , August 5 2021

Science has found Plan B to save humanity from the end of the world – 02/09/2019



At all times, the gurus were at the end of the world. With a greater or lesser degree of scooping. But never, like now – a situation in which it is well known that it will occur End for the planet Earth – they sought to find plan B that solves humanity.

"Our civilization has all the eggs placed in one basket, Earth. And all that we enjoyed could have disappeared due to a major disaster: the impact of asteroid, a kind of climatic climate, or the evolution of the Sun and the heat of our oceans. Therefore, the shift towards space is the most recommended thing for extending the existence of humanity Live physicist Avi Loeb of Harvard University. Loeb is the same scientist who surprised the world a few months ago when he stated that an asteroid discovered in 2017 could actually have been residues of a ship for the production of aliens. He was also a friend of popular astrophysics, Stephen Hawking, who proposed the same thing before his death: to find a new spatial home as soon as possible.

Próxima Centauri B. Artistic recreation of one of its provinces. Does it look like Earth? / Image: ESA

Próxima Centauri B. Artistic recreation of one of its provinces. Does it look like Earth? / Image: ESA

The next Centauri B, a planet that circulates around the star closest to the Sun, is currently the strongest candidate. First, and although it sounds weird, for his proximity. It's only 4.25 light-years from Earth. Have an idea: The Moon is at 1.3 seconds of light and Mars, at 4.35 light-minutes (when the orbit approaches). In astronomy, the distances are so large that it would be very difficult to talk about kilometers. Therefore, other types of measurements, such as parsec, astronomical units o light years: the distance traveled by light in one year. That Proxima Centauri B is less than 5 light-years away, this is a good point. Although it's far away.

The next Centauri B has a hemisphere that is always illuminated, exposed to high temperatures, while the dark hemisphere is extremely cold.

"By optimizing the small probe (a few kilograms) and the drive we currently have, I do not think we can get in less than 10 thousand years. However, in the previous phases are projects for the construction of solar sails powered by lasers from Earth that could launch mini-instruments at high speed: they would arrive in less than 100 years, "says astronomer Guillem Anglada Escudé, Queen Mary University, London, one of the researchers Next Centauri B.

Loeb talks about other deadlines and some of the advantages: "The rockets we have today would take 50,000 years, but it would be worth it. This planet is 20 times closer to its star than the distance that separates Earth from the Sun, but has proximal Proxima Centauri B, Proxima Centauri, a special feature: is a star of red dwarf, with only 12 percent of the mass of the Sun. and therefore much weaker. Therefore, the temperature in Proxima Centauri B is similar to that of the Earth, although this does not guarantee the existence of life as we know it here. An atmosphere is needed to have running water and the right chemical conditions. At the moment, we're not sure he has it. His atmosphere could sweep the wind of his own star. "

The discovery of Próxima Centauri B was observed in 2013, 2014 and 2016. Its signals were captured by the La Silla Observatory in Chile. / Photo: ESA

The discovery of Próxima Centauri B was observed in 2013, 2014 and 2016. Its signals were captured by the La Silla Observatory in Chile. / Photo: ESA

Anglada Escudé adds that this new world has a page that always looks at its star, as it happens with the Moon, which always shows the same face to Earth. The other is "hidden". Because of this, the phenomenon has a hemisphere that is always illuminated and would be exposed to high temperatures while the dark hemisphere would be extremely cold. "Due to this synchronized rotation we also know that there are no days or nights. One side of the planet is always daylight, the other in the eternal darkness. We also know that the year lasts 11.2 days, which means that it takes so much time to orbit your star.

How cold

Cold, but not so much. An average of four degrees Celsius according to the calculations. This is good news because this temperature gives priority to the conditions for the existence of running water, which is a key factor for the earth's life. Something that can be confirmed Live NASA scientist Anthony Del Genio, who conducted a rigorous study of the main features of this planet. "We know that Próxima Centauri B It's bigger than Earth, but not much larger, with a mass 1.3 times higher. But the amazing thing is that it can contain running water on its surface and then it could be residential.

She does not ripen or dusk, but she always lived like on the evening of noon on her daily side looking at her star.

Part of Genio's experiments with climate models to find out more details revealed another interesting conclusion: "His star is much smaller and colder than our Sun, and its starlight is mostly red, and with longer wavelengths than the human being can capture. Therefore, it is very likely that the color of your sky is reddish. And it does not ripen or dark, but it always lived like on the evening of noon on its daily side, which looks at its star, and on both sides is cloudy most of the time.

Look also

If it was possible to travel to Proximo Centauri B, where would it be appropriate to satisfy ourselves with humanity? On the Moon, Mars, or in this new world? "Luna and Mars do not have a significant atmosphere, however, they are much closer, something that shortens travel and makes colonies more practical for people." This may be the first step, then see if we can fit in Próxima B, "answered Avi Loeb .

The ocean world

"If you could ignore the distance, I think you could live in the Protaxi Centauri B in an area known as the limbo where the sun is always on the horizon. In this region, we could be protected against radiation that is more intense than those we received on Earth, and we have acceptable temperatures and energy. According to some study models it is possible that Proxima Centauri is the B & H Ocean Ocean, without continents. If this were confirmed, Mars would have agreed. But everything is done, "says Anglada Escudé.

Without knowing precisely what this alternative planet is (lacking more observations and research), the only certainty is that humanity needs plan B. "Return to the moon, on the side of China and soon in Europe, and plans to come with mission with a crew on Mars are the first steps of a child against the colonization of new worlds. This is a path that we can not stop if we want to tolerate, "sums up Avi Loeb. Lets go?


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