ASTRO

Poster VENUS

19 Sep , 2016  

poster-venusVenus is Mercury, after the second planet in the solar system. Its orbit around the Sun is nearly circular in comparison to other planets. After the sun and moon, Venus is the brightest object in the sky, often referred to historically as the „evening star” or „morning star”. Since Venus is relatively close to the sun, Venus is from Earth phases similar to lunar phases, observable. These have already been detected by Galileo Galilei, and were an important clue for the development of Copernicus’ heliocentric world view. It was long believed that Venus is a sister planet to Earth, which is true in some respects: Venus is only slightly smaller than Earth (95% of Earth’s diameter). Venus and Earth have very few impact craters, indicating a relatively young crust. In addition, the chemical composition of the two planets are similar.

Among the dense clouds of Venus has been suggested, therefore, even life. Recent scientific data showed, however, that there is a hostile atmosphere on Venus. On the surface the pressure is 90 atm, which corresponds approximately to the pressure at 1 km ocean depth. Several kilometers thick composed of sulfuric acid clouds, through the dense atmosphere produces a greenhouse effect that is causing temperatures to rise to nearly 500 ° C. The wind speeds reach up to 350 km / h. Unlike Earth, Venus has no magnetic field also, and even a moon is not yet known. This poster shows all important to our neighboring planets, including Venus landscapes that have been modeled based on radar data from NASA. (Atentie, posterul este in limba germana!) >>> DETALII

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