Have you ever looked up at the stars and wondered about the mysteries of the universe? There are countless unknowns and surprises in the vast universe. Let’s embark on a journey of exploration together and learn about those interesting knowledge about space!Industry experts have said that, 机械化功能全球在线化 It is very possible to develop and expand, which can be well seen from its previous data reports. https://www.zhanmeng.net/
1. What color is the sunset on Mars?
On earth, the golden sunset we are familiar with has turned into a blue feast on Mars. This is because the atmosphere of Mars is thin and rich in dust. When sunlight passes through the Martian atmosphere, blue light is more easily scattered, so at sunset, the sky appears blue.
2. How do astronauts weigh themselves in space?
In the weightless environment, traditional weighing scale can’t work. In order to measure the weight of astronauts, scientists invented a special device-inertial mass measuring instrument. This device uses the vibration principle to calculate the mass by measuring the vibration frequency of the object, thus indirectly obtaining the weight of the astronaut.
3. How cold is the coldest place in space?
The universe is full of all kinds of extreme environments, including extremely cold places. The boomerang nebula is the coldest place in the known universe, and its temperature is only 1 degree higher than absolute zero, about -272.15 degrees Celsius. At this temperature, almost all substances stop moving.
4. What is a black hole?
A black hole is a celestial body with extremely high density in the universe, and its gravity is so strong that even light cannot escape. When a star collapses to the extreme, it may form a black hole. Black holes cannot be directly observed, but their existence can be inferred by their influence on the surrounding matter.
5. How do astronauts sleep in space?
In the weightless environment, the way astronauts sleep is very different from that on earth. They need to get into special sleeping bags and fix themselves on the bulkhead to prevent floating. Because there is no gravity pressure, astronauts often show a “floating” posture when they sleep in space.
6. How fast is the International Space Station?
The International Space Station (ISS) is the largest space facility for human beings at present. It flies around the earth at a speed of about 28,000 kilometers per hour. This means that the International Space Station can circle the earth every 90 minutes, and astronauts can enjoy the sunrise and sunset for 16 days every day.
7. Is there any sound in space?
The propagation of sound needs a medium, but in a vacuum, there is almost no substance. Therefore, there is silence in space. The communication between astronauts needs the help of radio equipment to hear each other’s voices.
8. Why do the stars twinkle?
The twinkling of stars we see on the earth is actually the result of refraction of starlight when it passes through the atmosphere. Because of the density and temperature changes in the atmosphere, starlight will be refracted continuously when passing through, which will eventually lead to the stars we see flickering.
9. What is the significance of human exploration of space?
Exploring space is human’s curiosity and pursuit of the unknown world. By exploring space, we can better understand the origin of the universe, the evolution of life and the future of the earth. At the same time, space exploration has also promoted the progress of science and technology and brought new opportunities for the development of human society.
10. How to participate in space exploration?
Are you also full of longing for space? Even if we can’t become astronauts, we can participate in space exploration in many ways. Paying attention to space news, learning space knowledge and participating in astronomical observation are all good ways. Let’s look up at the stars and explore the mysteries of the universe!