Venus pulls the sonar again


The neighboring planet Venus is of interest again.

U.S. space agency Nasa said in early June that it would send two probes to Venus in the next few years.

Last week, the European Space Agency (ESSA) announced that it would follow suit. The Envision spacecraft is set to orbit Venus in the early 2030s. Nasan Davinci + and Veritas probes will be sent to Venus in 2028 and 2030.

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Planetary scientists have long lamented that our near-Earth-sized neighboring planet – and the brightest target in the night sky after the Moon – has received little attention for decades.

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Even the distant dwarf planet Pluto is now better known than the planet next to us.

Throughout the 21st century, Nasa has invested heavily in the study of Mars. It last took a sonar to orbit Venus in the late 1980s.

Venus only goes around this batch Japanese Akatsuki sonar, which measures the planet ‘s thick and carbon dioxide atmosphere.

So why is Venus of interest to planetary scientists right now?

One reason is the greenhouse phenomenon that unleashed Venus. Our neighbor is like a warning sign that the atmosphere is warming.

On the surface, the temperature rises in places up to 470 degrees. That heat melts the lead. The air pressure on the hot crust of Venus is about 90 times that of Earth.

So there is hardly any life on the surface of Venus. The sonar that reached the surface has also faded quickly, within a few hours at the latest.

However, according to planetary scientists, Venus was once very different.

The planet had a mild climate and oceans, rivers and streams on the surface. Some believe that Venus was in a habitable pattern – though perhaps more than a billion years ago.

About 700 million years ago, the greenhouse phenomenon crossed the point of swing and came to fruition.

One reason was the constant gas-spitting volcanoes or otherwise increased cloudiness. Venus entered a cycle of warming from which there was no return.

The phenomenon, of course, is to be avoided on Earth. The detailed path of Venus to hellish conditions can be survived with the help of sonar.

We need more information about the planet’s atmosphere and surface, perhaps even the continental plates of Venus, if they exist.

Volcanoes are also of interest. As many as 1,600 have been counted on the surface of Venus. The purpose is to find out if anyone is still spitting lava and various gases on the surface.

Understanding the differences between Venus and Earth helps to understand how planets generally evolve and how viable conditions arise.

The data from the three probes may explain how Venus became so different from Earth, a scientist from Nassa

Tom Wagner

said Thursday in the bulletin.

The clouds of Venus are also of interest. At altitudes above 50 kilometers, the temperature of the clouds is a comfortable 25 degrees, and atmospheric pressures are not a burden. On some floors, however, the wind drifts 700 kilometers per hour.

However, it is possible that primitive microbes would hover in the atmosphere of Venus. Last year, a group of astronomers reported that Venus was cloudy phosphine would have been found, one of the building blocks of known life. The discovery could not be confirmed or refuted – yet.


Source: Tiede by www.tiede.fi.

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