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Human space exploration with flights to other planets
Science and technology have reached a state that will allow producing a spacecraft for a mission to the planet Mars and other planets. But there is one big obstacle on the way of manned visiting even the closest planet Mars: human space exploration is impossible, the human body will not survive the flight. Imagine human space exploration in a flight to Mars: low gravity, ionizing radiation exposure, traveling millions of kilometers for six months. Without any "countermeasures" to protect muscles, bones, cells, it is impossible...
6 лет назад
The visible and invisible light of space and the universe.
When one thinks of space and the universe, one probably thinks of what the eyes can see. But the image to which human eyes are sensitive is only the beginning. The light of the universe is much wider. Electromagnetic spectrum is a term used by scientists to describe the entire spectrum that exists. From radio waves to the gamma rays, it is also the light of the universe, most of which is invisible to us with the naked eye! And even glaucoma has nothing to do with the eyes. The nature of visible...
6 лет назад
Is it dangerous for a meteorite to fall on planet Earth?
Over the centuries, man has wondered about the mysteries of outer space, trying to unravel them. Astronomical bodies such as a satellite, a star, a meteorite falling to Earth, an asteroid and a comet fascinated and attracted humanity. Having seen some of these astronomical bodies, we are either trying to apply them in our imagination as divine powers or to think of them as 'falling stars'. Similarly, some say that our fates are related to the movement of celestial bodies. However, modern astronomy rejects quite a few such myths...
6 лет назад
What is the smallest particle in the universe that exists?
The answer to the incessant question: what is the smallest particle in the universe that has evolved with humanity? People once thought that the grain of sand was the building blocks of what we see around us. Then an atom was discovered, and it was considered to be indivisible until it was broken down to reveal protons, neutrons, and electrons inside. They weren't the smallest particles in the universe either, as scientists discovered that protons and neutrons consisted of three quarks each. So...
6 лет назад
What's going on in the black hole?
It is known that the black hole is a mysterious and mysterious area of space in the Universe, representing a collapsing star with a huge gravitational attraction. Scientists are trying to predict what happens in the black hole. The result of theoretical research Theoretical research confirms that inside the black hole the gravitational forces compress the dying star with a force directly proportional to its mass. Thus, it can be assumed that the most massive group of stars (8.0-100 MQ) will suffer the most from gravity...
6 лет назад
Visible spectrum photon radiation
Each body on Earth and in space emits electromagnetic radiation (photons) of different lengths. As at the birth of the Universe and now the radiation of photons - these basic elementary particles, plays a much more significant role than the others. Elementary particle on Earth The higher the body temperature, the more photons it emits at a higher frequency. Temperature is a characteristic of a particle in a radiation state. If photons come into contact with any matter, one of the following phenomena occurs: Reflection of light in different directions is called scattering...
6 лет назад
The relict glow of the universe
Background or relict radiation of the Universe falls every second in a continuous flow to the surface of the Earth. Only a tiny part of the Universe's radiation is visible to the naked eye, though if we could see the whole electromagnetic spectrum, the sky would burn with this original radiation both day and night. There is no need to think that part of this hidden light is a very inexpressive glow. The long-wavelength universal glow - the cosmic microwave background or relict radiation - shows the changes that have occurred...
6 лет назад
What kind of telescopes are there to observe the universe?
Observations are fundamental dimensions of astronomy as a science. They are compared with data and theories obtained in laboratories by astrophysicists and other physicists to verify proven predictions. Astronomers are in a unique position among scientists because they cannot conduct experiments directly on the subjects of their research. Astronomers must wait for photons (and now other forms of non-electromagnetic radiation) to pass through the universe to Earth and for humans to see them with one of the devices...
6 лет назад
What are the stars in the sky?
A star is a celestial body that radiates light. It differs from planets, comets, satellites, and nebulae that are illuminated in the sky by the sun or nearby stars. The substance that makes up the stars in the sky is hot gas - plasma. The highest temperature on the surface of this massive gas ball reaches one hundred and fifty thousand degrees. (This is the surface of a white dwarf that has formed.) How do astronomers get to know these celestial objects? With the help of observations, astronomers first of all determine the mass, radius, and temperature on the surface...
6 лет назад
What planets are visible in the sky?
It is impossible to tell about all the planets in the sky and objects available for observation, so we describe the most interesting ones. Not a planet, but a star The main luminary that can be seen on a clear day is the sun. The sun is the closest star to us, and thanks to this, the only star whose surface can be seen (the other stars can only be seen at night, and even in the largest telescopes they are visible as glowing dots). It is so interesting to observe the Sun every day - we can follow the development of the spot, see how new spots appear...
6 лет назад