the people could fly the picture

From the perspective of biological evolution, the possibility of humans evolving the ability to fly in the future was extremely low. Flight required many conditions to adapt to flight, such as wings, hollow bones, extremely high metabolism, etc. The trajectory of human evolution was to adapt to the current ecological niche, and a quarter of the energy consumed by humans was used to replenish the brain. The brain consumed a lot of energy, and it was difficult to support the energy consumption required for flight at the same time. If one wanted to evolve the ability to fly, they might have to lose their intellectual advantage, which was unlikely to change drastically in the short term. However, with the development of science and technology, it was possible to fly with external equipment such as drones and flying cars. For example, the development of the low-altitude economy formed an industrial chain around emerging technologies such as drones, flying cars, and urban air traffic. In the future, people might take flying taxis and other equipment to fly. The novel " Hundred Years of Spaceship " is equally exciting. Everyone is welcome to click and read it!

In ancient times, although there was no ability to fly freely with the help of mechanical devices in the modern sense, there were the following related situations: - Flying in myths and legends: There are many descriptions of flying in ancient myths and legends in China and other countries (such as ancient Greece, Egypt, India, and Arabia). For example, in China mythology, the Rain Master Concubine was depicted as a goddess who held a jade board, wore a phoenix crown, and wore luxurious clothes to fly in the sky. Her duty was to control the rain, and flying in the sky was an ability given to her by the mythology. These myths and legends reflected the ancient people's desire for flight. - The embryonic form of flying devices: The ancient China people created some devices that could be regarded as the embryonic form of modern flying devices. For example, the lantern was created around 1000 AD at the latest. At the end of the Yuan Dynasty, Tao Chengdao was the first to think of using rockets to fly. He tied 47 homemade rockets to a chair and held two big kites in his hands to try to fly. Although he sacrificed his life when the rockets exploded, it was a brave attempt by the ancients to fly. In addition, there were also inventions in ancient times that embodied the concept of flight, such as bamboo dragonflies. Moreover, the ancients were inspired by natural phenomena and the flight activities of birds and insects. They yearned for flight, but due to the limitations of backward productivity and production methods at that time, it was difficult to achieve true flight like in modern times. The novel "Hundred Years of Spaceship" is equally exciting. Everyone is welcome to click and read it!

In space, people were in a state of microgravity or weightlessness. The concept of "flying" in this environment was different from on Earth. In the microgravity environment of space, people could move in some ways, such as using the handrails, foot pegs, and other facilities inside the spacecraft to push, so that they could float inside the spacecraft. In a sense, it could be seen as "flying." If the astronauts wore special spacesuits for extraterrestrial activities (EVA), they could use jetpacks to control their direction and speed, which was similar to flying. Therefore, people in space could achieve something similar to "flying" through specific means. The novel "Hundred Years of Spaceship" is equally exciting. Everyone is welcome to click and read it!

In space, a person could be in a floating state and look like they were flying. This was because space was a microgravity or weightless environment. There was no gravity like the Earth's surface that bound people in a fixed position or caused them to fall. For example, when astronauts walked in space outside the space station, they would move in this microgravity environment, as if they were "flying" in space. However, this kind of "flight" was different from the concept of flight on Earth, which relied on one's own strength to overcome gravity. It relied more on external forces (such as jet propulsion devices) or the initial launch force to move and float in space. The novel "Hundred Years of Spaceship" is equally exciting. Everyone is welcome to click and read it!

Humans couldn't fly like birds or airplanes because they didn't have the body structure that birds had to adapt to flight, such as light, strong and hollow bones, strong and flexible muscles concentrated on the chest and wings (humans didn't have wings), and feathers that could provide lift and maintain body temperature. They also didn't have the structure of airplanes to generate lift and propulsion. However, humans could fly with the help of tools. For example, an airplane generated lift through the difference in airflow velocity between the upper and lower wings (according to Bernoullian principle, the airflow velocity was large and the pressure was small, and the airflow velocity was small and the pressure was strong). The engine of the airplane provided power for the forward movement of the airplane. For example, the turbine jet engine relied on the combustion chamber to inject fuel into the combustion chamber, and the gas flow was ejected from the spout to generate thrust. The outer duct of the turbine fan engine provided most of the thrust, and so on. The helicopter relied on the rotation of the propeller to stir the air to generate lift to achieve flight. In addition, humans could also fly into the sky with the help of hot air balloons, airships, and other tools that relied on buoyancy. The novel "Hundred Years of Spaceship" is equally exciting. Everyone is welcome to click and read it!