Friday, May 29, 2020
The epidemics and artificial intelligence
Can the planets of red and brown dwarfs maintain lifeforms?
Can the planets of red and brown dwarfs maintain lifeforms?
This is one of the most interesting questions in the history of science, and one of the answers is that the life form, what might be on those planets would be formed in there and they would be adapted to the conditions of the surface of those planets. Red dwarfs are every time so-called flare stars, and there are massive eruptions, what would burn the surface of the planets, what is at the habitable zone.
But the thing is that there is a possibility that the lifeforms on those planets are different than the lifeforms on our planet. One of the possibilities is the lifeforms are a little bit like some worms, which are pulling their tentacles in when the eruption of the star starts. Or another version would be the alga-type lifeform, what cells would split so fast that the flare of the star would not burn them all.
In some simulations, the lifeforms would not be active most of the time. That means that the planet would be away from the habitable zone, and when the flare eruption happens the lifeforms would be active a couple of hours, and then go back to hypothermic sleep until the next eruption will start. That kind of lifeform could be some kind of diatoms or bacterial alga.
The thing is that the term "lifeforms" are not the same as "intelligent lifeforms". So the worms and other kinds of animals can live at the other planets even in our solar system. But the intelligent lifeforms would be a more unusual case. The chance to find the lifeform at the extrasolar planet is always interesting.
If there is a possibility to find the lifeform from Proxima Centauri B, that can cause the situation that we should re-estimate our models of the lifeforms and possibility to find them. If Proxima B has some kind of lifeforms the similar lifeforms can also be found from the planets of other red and brown dwarfs.
There is a model that the brown dwarfs or red dwarfs, what are orbiting each other, would have a planet, where are the lifeforms, what is active only when both of those stars are shining to their ice-cold planet. And maybe the active period of some other creatures is limited only the time of flare eruptions. That is one model of the primitive lifeforms that are exciting and interesting, and what can be found also from other dwarf stars.
Image: https://static.businessinsider.sg/2019/10/10/5d83c9752e22af31145b08d6.png
Can the rocket engine be silent and invisible?
Can words kill people?
Thursday, May 28, 2020
The modern battlefield is a very complicated thing
The problem with social media is, what if they are biased?
Hypothetical "Nemesis the bringer of destruction"
Hypothetical "Nemesis the bringer of destruction"
Sometimes astronomers are looking at the Planet Nine or Planet X(1) or "Nemesis-star"(2), what they expect to be found in Kuiper belt. The idea of those missing planet or star has been formed, when the astronomers noticed the strange errors between calculations and metering of the trajectory of Neptune. And the similar errors in the trajectory of Uranus caused that astronomers started to look for Neptune.
On Planet Nine and "Nemesis" star is conducted many legends and one is that some dictators like Adolph Hitler have tried to escape to the solar system of that hypothetical star. There is no proof about this kind of plan, but that kind of thing always interests the novelists. But the reality is that nobody ever has seen the Planet Nine or "Nemesis-star". So that object is the purely hypothetical thing, what is mentioned being some Brown Dwarf or super-earth.
The legend of this strange and still hypothetical red or brown dwarf star, what orbits the sun, or what would come so close to our solar system, that it causes terrible disasters on Earth has been somehow quite unknown for the great audience. There has been introduced the idea that "Nemesis" would be Proxima Centauri or Luhman-16 and Barnard's star, which is coming near our solar system in a certain period.
The thing is that it requires that Barnard's star Luhman 16 are also orbiting Alpha Centauri, as well Proxima Centauri does. In image two is the diagram of the nearest stars of our sun, and if we would want to search Nemesis, we must think about the Alpha Centauri as the middle point of the diagram.
And Alpha Centauri double star is more massive than the Sun, and that means that this object has a greater effect on its neighbors than the sun. But the thing is that the trajectories of those stars don't match and there has been introduced that the mysterious "Nemesis" is the phenomenon, where those stars are in the line, and that causes a powerful gravitational effect in our solar system.
But the question is, why nobody sees that star? The problem with Nemesis is connected to the problem of hypothetical "Planet Nine". Where is the ninth planet of our solar system? There could be one answer for that thing, and that is that the star, what had rendezvous with the Sun has been "stolen" that planet. And is that star "Nemesis"? If "Nemesis" exists, what of those stars it could be?
Or is "Nemesis" some kind of black hole (3) or "silent" neutron star, which travels in the empty area in the Universe, where it has no contact with the material. And that means there would be no radiation either from a black hole or neutron star.
(1) https://en.wikipedia.org/wiki/Planet_Nine
(2)https://en.wikipedia.org/wiki/Nemesis_(hypothetical_star)
(3)https://www.livescience.com/tiny-ancient-black-hole-planet-nine.html
Image: https://upload.wikimedia.org/wikipedia/fi/thumb/f/f3/Proxima_B.png/800px-Proxima_B.png
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