Let’s get rid of global warming! We only need 1.052 billion liters of white paint ● After all, are there dark stars or not? ● Teams of four-legged robots will soon explore the moon

Let’s get rid of global warming! We only need 1.052 billion liters of white paint

This is not just any paint, but created by an American researcher named Xiulin Ruan from Purdue University in Indiana. And this paint is the whitest of all. So white, it reflects 98.1% of sunlight. From here you start to get the idea.

The professor in question says we only need to paint 1-2% of Terra with his paint and the effects of global warming will be reversed. And outer space, where the reflected solar energy will return, will not be upset either, because there is enough space in it.

How much is 2% of the Earth’s surface? This means about 9.4 million square kilometers. About as much as the United States of America. According to his calculations, the mentioned professor says that about 526 billion liters of paint bought from him will cover 1% of the planet’s surface. Need double, so 1.052 billion would be good.

In principle, it remains to paint the United States of America, because they fixed the correct surface, we do not need to complicate ourselves with other calculations, with borders, with misunderstandings between neighbors and so on. Also, start drawing the planet’s oceans or deserts, and that doesn’t seem like a very smart idea.

But going back to smart ideas, know that white paint is not new. Texas has already started painting all roofs of buildings white since 2009, encouraging the use of white cars, and the authorities there are considering expansion.

We don’t even need that much paint, because in some places the work has already been done. So we come out even better for the price. That’s all, let’s solve the heating! Work!

After all, are there dark stars or not?

The existence of dark stars was proposed relatively recently, in 2007. What are these stars? These are stars that, hypothetically speaking, appeared before ordinary stars, shortly after the Big Bang, when the universe was obviously much smaller.

Compared to normal stars that run on nuclear fusion, dark stars would have a different “engine”. In addition to the fusion of hydrogen and helium atoms, such primordial stars must also have had an amount of dark matter (hence the name). The star’s power would be created precisely by the mutual annihilation of antimatter particles.

Hypothetically, such stars would have a mass millions of times greater than the mass of our Sun. The luminosity would be billions of times greater than that of the sun, and if we placed such a dark star in the center of our solar system, its boundaries would reach beyond the orbit of the planet Saturn.

The idea is that, depending on the amount of dark matter at its disposal, such massive stars could exist for up to billions of years. Most, however, would become supermassive black holes, such as those found at the center of galaxies. So far so good, good, simple and beautiful.

Like I said, it’s all hypothetical because no one has seen or analyzed dark matter. Second, even if computer models suggest the idea may be plausible, there are still many unknowns in the equation. For example, we don’t even know if dark matter particles annihilate each other to produce energy.

And here begins the most interesting. A group of American researchers from Colgate University, New York, and the University of Texas say that with the help of data provided by the James Webb Space Telescope, they could get clues about the existence of such stars.

In principle, traces of the stars in question can be detected by their emission of gamma rays, neutrinos, dark matter and infrared light. The data obtained so far show that the objects reported by the American researchers will have an extraordinary brightness in the red spectrum. According to the first calculations, they would have a mass of 500,000 to 1 million times that of our Sun. In addition, the luminosity will be billions of times greater than that of the star at the center of our solar system. That is, information that suggests hypothetical dark stars.

But everything is at a speculative level. So far, even the observations haven’t gotten very far, and with so many elements missing from the equation, the study authors also say, it’s hard to give any certainty. So don’t pop the champagne just yet.

Teams of four-legged robots will soon explore the moon

With the future lunar base (or even future bases) a bit behind the design stage and already the subject of a space race between China and the US, several robotics experts from the universities of Bern, Zurich and Basel have joined forces to lend a hand. hand

The idea is that any base, Chinese or American, will need resources with duium, especially since it will house human crews. Constantly extracting resources from the Earth requires huge costs and makes everything less feasible. Therefore, all views are focused on solar resources and methods of their detection and exploitation.

That’s where Swiss researchers come in, who say in a study published in the journal Science Robotics that they’ve built and even tested a trio of four-legged robots in challenging terrain in Switzerland and Luxembourg. Some futuristic version of puppies.

Each of the three robotic quadrupeds called ANYmal has a specific mission. One uses a video camera to identify different types of rock, the other uses a laser device to scan and create a detailed map of the environment. The third performs all these actions, although not as efficiently as the first two.

The advantages are obvious, say the Swiss. First, quadruped robots are slightly more efficient than existing rovers when it comes to navigating rough terrain. Second, the fact that they work as a team means that errors are greatly reduced. Then, if one of them breaks, it’s not the end of the mission like before, but another will take its place.

The project received funding from the European Space Agency and is just the first step in what will be robotic exploration of the Moon. Specialists participating in the project say that they already have several types of robots under development, including the type of drones that also form real reconnaissance units. And last but not least, the Swiss hope to make them semi-autonomous, that is, less dependent on direct human control.

It doesn’t sound bad at all. Now the ball is in the court of the Chinese, who, most likely, could not come up with alternative options for exploring the Moon.

Follow our Facebook page, HotNews Science, to be able to receive live information and curiosities from the world of science in real time!

Photo source: profimediaimages.ro