Aviation and space
- How to see the Earth from the satellite in real time To see the Earth from the satellite in real time became possible thanks to modern computer technology. There are sites that display taken satellite pictures of the Earth in a variety of formats.
- How to find Mars in the sky Mars is the outer planet, is the fourth planet from the Sun neighbour of the Earth, has always attracted the attention of astronomers. But to find it, you need to know not only the place of her celestial residence, but also to consider the most favorable time of observation.
- What is the temperature in space Temperature is one of the characteristics of the substance, and since substance as such in space is almost non-existent, it is difficult to talk about the temperature of the space in the usual sense. However, you should not neglect the fact that beyond the planetary and stellar atmosphere has dust particles, gas molecules, flow infrared, ultraviolet, x-rays, etc.
- What planets are visible from Earth To the naked eye from Earth you can see five planets in the Solar system – Venus, Mars, mercury, Jupiter and Saturn. Although some people claim that they have such keen eyesight that allows them to see Uranus or Neptune.
- When will the next planetary alignment? The parade of planets is called an astronomical phenomenon during which several planets of the Solar system come together in a small sector on one side from the Sun.
- The speed with which Earth revolves around its axis Few people know that the Earth has irregular speed around its own axis, its speed depends on the latitudinal location.
- What is the star closest to the Earth The only star in the Solar system, and hence closest to Earth is the Sun. All the planets perform their movement around her, and therefore the planetary system is named after its star.
- What number will be growing moon From school physics course known how much the Moon affects all life on Earth. The seas and oceans, plants and animals, the mood of the people and weather phenomena – everything is in her power. The strength of this impact depends on the phase in which the nearest celestial body. That is why it is important to know, diminishing or increasing the Moon.
- Why do we see one side of the moon People started studying the moon many centuries ago. In the XVII century was drawn up the first lunar maps. However they were shown only one side of the moon. The study of the second, reverse sides, became available to people only as a result of space flight.
- What is weightlessness Body weight, unlike mass, it can be changed under the influence of acceleration. Small changes in weight can be felt, for example, at the beginning of the movement or stop of the Elevator. A state of complete lack of weight is called weightlessness.
- How to determine the distance to the Sun All measurements of cosmic distances are based on the astronomical unit – average distance from Earth to the Sun. But how to determine distance to the object, which does not make it no measuring tool?
- How many solar systems in the Galaxy The galaxy, called the Milky Way, consists of a huge number of stars, about 200 billion, but the exact number is impossible to calculate. Many of them form planetary systems like our Solar. While scientists have found about a thousand such systems, but there is still a lot of discoveries.
- How planes fly Despite the fact that the plane weighs a ton, he is able to fly. The reason for this is a special wing design that allows you to change the density of air over and under the wing.
- How to navigate by the sun The orientation of the sun allows you to define three essential factors: the direction you are facing, position oriented relative to the known localities and the direction of movement to familiar objects. It often happens that neither a compass nor a Navigator at hand. In this case, to determine the part of the horizon can be and by the sun.
- What is 1 000 000 light years In space distances are so great that if you measure their standard system of units, the numbers work very inspiring. A light year is the unit of length to measure huge distances using a smaller number of digits.
- How to tell the time by the sun While Hiking on a walk in an unfamiliar area or going to the woods for mushrooms and berries, you can be in a situation when you want to know the time without a watch. In fact, the watch can break or stop. In these times, when almost everyone has a mobile phone with a built-in clock, this situation is unlikely, let us imagine that we need to know the time in the sun. Is it possible?
- What is the zone of turbulence Turbulence is one of the most scary words for people suffering from the phobia of flying. In fact, this phenomenon is harmless, since in the history of the fly there was not a single accident occurred only due to the falling turbulence. This is a natural process, which is compared with the loads experienced by a moving car or train.
- Which star is the brightest The brightness of the stars as perceived by the human eyes, in astronomy, apparent magnitude is called the magnitude. There is also a parameter of the luminosity of a celestial body, the value of which does not depend on the distance between the observer and the star.
- What planet is the coldest Currently, the "possibility" of space not yet fully investigated, so it is difficult to say which of the coldest planets of the Universe. However, scientists already know for sure that the lowest temperature in the Solar system are present on the Uranium. But what is it?
- How high do planes fly Modern passenger aircraft can fly at different altitudes. Seeing in the sky flying aircraft, which has a white trail, we often don't think about how high he flies.
- What planet is visible from Earth Planet I want to see everyone, because it's the closest to us galaxy objects. If you know where to look, it is very easy to calculate Jupiter, Venus and even Mars in the night sky.
- How to see Venus Venus - the second planet in the Solar system. It coexists with the Land, and therefore, if you have good eyesight it can be seen with the naked eye. You only need to choose the right time for her observations.
- Why the plane takes off against the wind The control plane is a science and real mathematical analysis. After all, you need to consider a huge number of indicators that help iron machine to soar in the air. Ordinary people are always a lot of issues connected with aviation. And one of them is why the plane takes off against the wind. After all, it would seem logical that the reverse was true.
- How is called the balloon and who is its Creator The balloon or rather the balloon was the first aircraft that enabled man to break away from the earth. The principle of operation of the balloon based on the Archimedes ' principle, and the lifting force of the aircraft is created by the density difference of air and gas, filling the shell. Lighter and less dense gas tends to rise in the region of equal densities, dragging the entire craft. Currently, the balloons are used for extreme tourism, sport, for amusement purposes and for atmospheric research.
- How to identify the North star North star is located above the North point of the horizon in the Northern hemisphere. This allows you to use it to define the sides of the horizon. If you find yourself in unfamiliar territory without a compass, the ability to find the Polar star will help you to properly navigate the terrain.
- Choosing first telescope The market is flooded with telescopes of different brands, sizes and in different price ranges; however, all of these telescopes aimed at fans. How not to get lost in this variety and to choose the telescope that will give you pleasure for years?
- Why died Gagarin Yuri Alekseyevich Gagarin, the first man to visit space. He died on 27 March 1968 during a training flight. And incomplete information about his death still haunt inquisitive personalities.
- Where on earth did the water The origin of the water on the blue planet remains an Enigma for all mankind, as the origin of the planet Earth. Still, the debate continues among scientists around the world working in this area.
- The speed with which planes fly There are different classifications of planes: the type of wings, chassis design, the type of takeoff. At flight speed they are divided into four types. The speed record set by NASA hypersonic aircraft that can fly more than 11 thousand kilometers per hour. Normal passenger planes fly at about 900 kilometres per hour.
- How to find Mars Mars is the fourth farthest the Sun and seventh in size of the planets of the Solar system. It got its name after the Roman God of war. Sometimes Mars is called the red planet, reddish tint of the surface gives the oxide of iron contained in the soil.