DaVinci and Veritas tasks are confirmed by the NASA. This is very exciting. But why are these tasks very exciting?
The first reason for this: it has been a very long time since we did not go to Venus. (the latest Japanese orbiter Akatsuki has gone and has been there for 5 years.) In the past we used to care more about Venus because Venus is close to the Earth, big and it is a rocky planet. And it is closer to Earth than Mars. So we can go to the Venus faster than we can go to Mars. It’s impossible to see its surface from space as its thick atmosphere blocks all visible wavelengths. So we have a lot of questions about Venus, and now we will be getting answes to the questons. Now, it is time to learn about it.
In the last 10 years, our curiosity about other planets has increased. We have been searching about the stars and rocky planets. In this universe, is there any other planet similar to the Earth? Or the Earth is matchless?
If we find a planet the size of the Earth, what would the conditions be there? Do they have oceans, trees and clouds? Or do they look like Venus hell?
Why didn’t we come back to the Venus?
Of course everyone has made a guess about it. First of all, it is technically very difficult to build a vehicle that can withstand the surface of Venus. Doing scientific researches in Mars or Moon is easier than Venus. We can make a landing on the Moon or Mars and we can stay there for a while. But we cannot do this on Venus. But we can stay for a while on the surface of Venus. We now know about the Solar system, temperature and pressure. In this atmosphere no matter how bad the conditions, at this high pressure, one bar and the temperature is like zero degrees. This makes it possible to work by wearing a coat.
A meteorite was discovered in Antarctica in 1984. Research has shown that this meterotin comes from Mars. And speculation began that the meteorite contained microbe fossils from the Red Planet. Finally, they agree that there are no alien lifeforms. However, Mars suddenly began to be seen as a planet that had hosted life before. Since the end of the Magellan visit to the Venus, we have never been interested in Venus. So far, our sudden interest in Mars caused us to abandon our interest in Venus.
What would the surface of Venus be like?
They surface temperature is 470 degress. İt’s spread like this all over the planet from its equatorial position to its poles. In this case, the atmosphere containing 96.5 percent of carbon dioxide would suffocate us. İn Venus surface atmospheric pressure is 90 bar. Thıs pressure in Earth water 1 kilometres under like get to stop. There is a spherical cloud layer covering the planet, and the clouds here are made of sulfuric acid. We don’t think about it rain on the surface because this planet so hot.
When will these tasks end?
There are two guesses as to why Venus is the way it is. First: it comes to life with a “magma ocean phase” like other rocky planets. Venus’ close proximity to the sun is thought to cause it to cool enough to allow gases to condense in the atmosphere. The H2O molecules condensed and covered the surface with water, so no crust was formed. Therefore, water molecules remained in the atmosphere filled with carbon dioxide.
That means Venus will always be under the greenhouse effect. So, this planet has been like hell from the beginning. The simpliest reason why Venus is so different from the Earth is that it is closer to the Sun than the Earth. Second opinion: Venus was once a planet like the Earth. They have oceans and plate tectonic. Deuterium is an isotope of hydrogen. We discovered that this rate is 100 times higher on Venus than on the Earth.
The best explanation for this is that Venus once had an abundance of water. But water has disappeared in time. The surface of the planet is now completely dry. In this case, something triggered the greenhouse effect.
Elifnaz Güçlü
SINAV COLLEGE KARŞIYAKA CAMPUS 9-A
Resources.
*(Populer Science number of August /Prof.Paul Bryne)
