Science
From the almost "car accident" of Starlink satellites, do Internet satellites really only have advantages?
I believe that many friends in front of the screen are no longer familiar with Musk. As the founder of SpaceX, Tesla and Neuralink, he can be called a generation of Internet leaders. On the 19th, the SpaceX starship prototype SN15 was tested in Texas, USA. The live broadcast showed that SN15 flew to an altitude of 10 kilometers and successfully landed at the Texas base 6 minutes after takeoff. It has successfully sent humans to space, completed another commercial manned flight, and plans to send humans to Mars in 2025.
By adalberto alejandrina3 years ago in Earth
novel! This giant exoplanet has been photographed by scientists, and its orbit is quite strange
Through the Young Exoplanet Survey (YSES) project, astronomers have directly photographed a gas giant in an orbit that is unusually large. It is as far from its star as Jupiter is 20 times from the Sun.
By adalberto alejandrina3 years ago in Earth
Believe in science
Genetics Since the 20th century, it has been believed that gene mutation occurs randomly, and the difference of gene frequency appears in the population under the action of natural selection. However, a recent study of Arabidopsis thaliana (Arabidopsis thaliana), published in Nature, challenges this view.
By gaisndm Hawkshaw3 years ago in Earth
Believe in science
Medical science Nine days after the pig heart transplant, a 57-year-old American man can walk on the ground. On January 7, a team from the University of Maryland School of Medicine said it had performed the world's first pig heart transplant on a 57-year-old man with terminal heart disease. According to China Business report, Professor Wu Zhongjun, director of the artificial organs Laboratory at the University of Maryland, revealed on January 15 that the patient had left ECMO (extracorporeal membrane oxygenation, which can provide long-term cardiopulmonary support) two days ago, and began to walk on the ground one day ago. A team of doctors at the University of Maryland said it would monitor patients' immune response and heart function and would continue to conduct controlled clinical trials.
By gaisndm Hawkshaw3 years ago in Earth
The lungs of the earth, the Amazon rainforest, the paradise of animals is a forbidden zone for human beings, and there are dangers everywhere
As we all know, human beings have not yet fully explored the "underwater world", and the depths of the ocean are unknown and mysterious to us.
By suzanne darlene3 years ago in Earth
Dragonfly: The "king" of flying, scientists have been studying for decades, but have been unable to understand its technology
When people talk about objects that can fly freely, people generally think of birds and airplanes. Birds are small animals that are born with the ability to fly, and airplanes are our most outstanding inventions in modern times. in the infinite sky.
By crudden elle3 years ago in Earth
变异毒株出现后，“拔牙”将面临失效
When the ASF outbreak occurred for the first time, the major pig farms came up with a "tooth extraction" plan based on biosafety through repeated practice. As soon as this plan came out, major farms scrambled to imitate it, and the effect was satisfactory. However, due to the emergence of the natural variant of African swine fever genotype II with low lethality, the plan encountered serious challenges: failure or high culling rate.
By crudden elle3 years ago in Earth
Fusion Engineering Dilemma
1. Fusion research and tokamak devices The established goal of fusion energy research is to develop a new type of electrical energy based on the theory of nuclear fusion, the principle of which is the same as the heating principle of stars such as the sun.
By crudden elle3 years ago in Earth
From dwarf to giant: the height is 1.27 meters before the age of 21, and it grows to 2.34 meters after the age of 21, the only case in the world
In "Alice in Wonderland", the girl Alice once ate a kind of biscuit, and her body became so huge that it could break through the house; and after eating another kind of biscuit, Alice's body would become smaller, like a Insect ants. Such fantastic things will probably only happen in the fairyland in the dream, but in reality, there have been people who have both dwarfism and gigantism at the same time.
By suzanne darlene3 years ago in Earth
The second largest planet in the solar system - Saturn, the planet that rains "diamonds"
Can diamonds be mass-produced on Saturn? Can. Under the upper atmosphere of Saturn, a large number of water and gas clouds are constantly dancing, and the super lightning flashes turn the methane gas into a large cloud of soot. The downward pressure increases, and these soots accidentally turn into diamonds . As the saying goes: a grain of Saturn's ash on your head may be a diamond, but don't think too much about it, these diamonds quickly disintegrate and eventually liquefy under the pressure of Saturn. Forty thousand kilometers below Saturn's surface, take a look at its largest source of energy. The pressure here is very high, the gas looks like liquid metal, and the molten helium rains down in the hydrogen, releasing an amazing amount of heat. This is a very specific heat source, like the engine of Saturn's weather.
By crudden elle3 years ago in Earth
There have been at least 2 supernova explosions around the earth, which have caused biological extinction. What should humans do?
According to the research, scientists have found that in the past 10 million years, there have been at least two supernova explosions around the earth, and in the process of supernova explosions, the released energy reaches the earth and precipitates in the earth's strata, allowing scientists to have Opportunity to discover the occurrence of disaster through geological survey.
By suzanne darlene3 years ago in Earth
