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Scientists have put forward a new hypothesis for the formation of the Earth: it was formed longer than previously thought, and under the huge influence of Jupiter
Astronomers have put forward a new hypothesis for the formation of the Earth, supported by mathematical modeling. This theory is devoid of inconsistencies in the standard explanation. The results of the work are published in the journal Nature Astronomy.
According to the most common theory, the Earth was formed about 4.567 billion years ago from the debris of the most common asteroids, chondrites, cosmic dust and gas. But so far no asteroids have been discovered whose composition would be close to the composition of the Earth. Models show that the Earth should contain much more light elements – hydrogen and helium – than it actually is. Scientists have presented various explanations, such as that the heat that was released during asteroid particle collisions could vaporize some of the lighter elements.
But the authors of the new study showed that heat should have destroyed heavier substances, which did not happen. Therefore, they offer another explanation: planetesimals could participate in the formation of the Earth. These solid bodies in orbit around protostars attract more and more dust particles to themselves, gradually increasing in mass. In this case, the process of formation of the Earth could be very slow. This may also explain inconsistencies in the composition of the planet, since planetesimals can have a different composition. The authors proved the possibility of their hypothesis with the help of mathematical modeling. Moreover, it showed the huge influence of Jupiter on the formation of Mercury, Venus, Earth and Mars.
Asus has revealed its new ROG Swift OLED PG49WDCD gaming monitor, which offers a very unusual feature set.
First, the monitor is huge. We are talking about a 49-inch panel. Secondly, this panel is curved. Thirdly, this is a QD-OLED panel, which is still very rare. Among other things, it is characterized by a peak brightness of 1000 cd / m2.
Fourthly, the resolution of this panel is 5120 x 1440 pixels, that is, the aspect ratio is 32:9. In addition, the panel supports a frame rate of 144 Hz.
From the rest, we can note support for USB Power Delivery with a power of 90 W, HDMI 2.1 ports and a stand that allows you to adjust the height of the panel. Price data is not yet available.
The flagship smartphone Samsung Galaxy S23 Ultra sells for $1,200, and the company costs almost three times less.
According to Counterpoint analysis, the production of the flagship costs Samsung about $469. Thus, Samsung makes more than $700 on each Galaxy S23 Ultra, but this, of course, does not take into account many factors, including marketing, R&D and so on. And even assembly is not taken into account here, although it is usually very cheap in terms of one device.
More than a third of the production price of the flagship comes from the SoC Snapdragon 8 Gen 2, that is, the platform costs about $ 165, which is very, very much. Second place in price goes to the screen (18% of the cost), followed by cameras (14%) and memory (11%). 67% of the cost of production comes from Qualcomm and Samsung components.
Japan is going to transfer energy from space to Earth as early as 2025. We are talking about the transfer of energy received from solar panels placed in space. Of course, without any cables.
There are few details about the project yet. It is known that it will be implemented by private companies with the support of the state. It is also reported that the project will involve small orbiting satellites, which will transmit energy in the microwave range to Earth.
In itself, the technology of energy transmission over the air is not at all new, but in the case of such a project, we are talking about distances of hundreds of kilometers. The Japanese space agency JAXA made a breakthrough in this area back in 2015, when scientists managed to transfer 1.8 kW of power, but then the distance was only 50 meters.
At the same time, even if Japanese scientists succeed, the technology of transmitting solar energy directly from space is unlikely to become widespread in the foreseeable future, since now calculations show that about 7 billion dollars need to be spent on generating 1 GW of power in orbit, and how much of them will be able to deliver to Earth, and it is not yet clear at all.
Monitor with a giant curved 144Hz QD-OLED panel. Asus ROG Swift OLED PG49WDCD unveiled
Asus has revealed its new ROG Swift OLED PG49WDCD gaming monitor, which offers a very unusual feature set. First, the...
One Galaxy S23 Ultra costs Samsung $469 with a retail price of $1,200
The flagship smartphone Samsung Galaxy S23 Ultra sells for $1,200, and the company costs almost three times less. According to...
Japan will try to transfer energy from space to Earth as early as 2025
Japan is going to transfer energy from space to Earth as early as 2025. We are talking about the transfer...
This is the second generation of the iconic NH-D15 super cooler. There are not many changes, but it’s still a long time to wait for the release
Noctua first showed a new generation of CPU cooler NH-D15. Outwardly, the cooler has changed very little, so they decided...
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