Why is Venus – the most mysterious planet?
Venus – the second from the Sun and the closest to the Earth planet. However, before the space flight of Venus knew very little: the entire surface of the planet covered with thick clouds, which did not allow her to study. These clouds are made of sulfuric acid, which is highly reflective. Therefore, the visible light is impossible to consider the surface of Venus. The atmosphere of Venus is 100 times denser than Earth’s, and consists of carbon dioxide. Venus is not illuminated by the sun than Earth is illuminated by the moon in the clear night. However, the sun heats the atmosphere of the planet so that it is always very hot – the temperature rises to 500 degrees. The reason for such a strong warming – the greenhouse effect, which creates an atmosphere of carbon dioxide.
Venus in natural color
The atmosphere on Venus discovered the great Russian scientist Mikhail Lomonosov June 6, 1761, when the telescope could observe the transit of Venus across the solar disk. This cosmic phenomenon was previously calculated, and were looking forward to astronomers around the world. But only Lomonosov drew attention to the fact that, in contact with the disk of Venus the sun around the world came “thin as a hair, shine.” Lomonosov gave the correct scientific explanation for this phenomenon: he considered it the result of the refraction of sunlight in the atmosphere of Venus. “The planet Venus, – he wrote – is surrounded by a noble air atmosphere, such (as long as no more), what pours around our terrestrial globe.”
Pressure up to 92 Earth atmospheres. This means that for every square inch of crushing weight of a column of gas of 92 kilograms. The diameter of Venus is less than 600 kilometers of the ground, and the force of gravity is nearly the same as on Earth. Pound weight on Venus would weigh 850 grams. Thus, Venus is similar to Earth in size, gravity and composition, so it is called “Earth-” planet, or “Earth’s sister planet.”
Left to right: Mercury, Venus, Earth, Mars
Venus rotates on its axis in the opposite direction to the other planets of the solar system – from east to west. Behaves is only one planet in our system – Uranus.
One revolution around its axis is 243 Earth days. But Venusian year is only 224.7 Earth days. It turns out that a day on Venus lasts more than a year! On Venus there day and night, but the seasons do not happen.
In our time, the surface of Venus explore how to use the spacecraft, and by means of radio waves. Thus, we found that most of the surface of Venus occupy hilly plains. Ground and the sky above it orange. The planet’s surface pitted cratered arising from impact of gigantic meteorites. The diameter of these craters reaching 270 km! Also learned that on Venus, tens of thousands of volcanoes. Recent studies have shown that some of them – acting.
Image of the surface of Venus, based on radar data:
Maat volcanic mountain height of 8 km
Venus has no natural satellites.
Venus – the third brightest object in our sky. Venus is called the morning star and the Evening Star is because the Earth it looks brightest just before sunrise and sunset (in ancient times believed that the morning and evening of Venus – two different stars).
Venus in the morning and evening sky
is brighter than the brightest stars
Venus – the only planet in the solar system, which received its name in honor of a female deity – the rest of the planet named after the god-men.