Although Venus is nicknamed "the evil twin of the earth", it is different from everything on Earth: scorching, dry and shrouded in poisonous smoke. The temperature of Venus' atmosphere can reach 400 degrees, which means if you bring a piece of lead to Venus, it can melt.

Although Venus is nicknamed "the evil twin incarnation of the earth", it is different from everything on Earth: it is scorching, dry and shrouded in poisonous smoke. Venus atmosphere can reach 400 degrees, means that if you bring a piece of lead to Venus, it can melt.

However, just 1 billion or 2 billion years ago, these two willful "brothers" might be more similar. The latest computer simulations show that early Venus looked much like Earth and might even be habitable.

"This is an important unsolved mystery about Venus: it seemed to be very similar to Earth at first, but how did it become so different later?" said David Grinspoon from the Planetary Science Institute in Tucson, Arizona, USA.

Grinspoon and his colleagues were not the first people to think of Venus once livable. It is similar in size and density to Earth, and the two planets are so close when formed that they are made of the same bulk material. Venus also has an unusually high deuterium hydrogen atom ratio. Venus's volume is very close to Earth and its mass is very close to Earth. It seems that the universe is specifically arranged in this area for the origin of life and for double insurance.

This shows that it once had a lot of water, but it mysteriously disappeared with the passage of time.

To simulate early Venus, the researchers used models of environmental conditions that are commonly used to study Earth's climate change.

They created 4 versions for Venus, each with different details such as energy obtained from the sun, length of the day, etc. Because the concentration of carbon dioxide in Venus' atmosphere is too high, the greenhouse effect is too strong, so that life cannot survive in such a harsh environment.

Due to the lack of information about Venus’ climate, the team filled in some educated speculations for the model. They also added a shallow ocean that accounts for 10% of the Earth's ocean volume and covers about 60% of the surface of Venus.

By looking at how each version might evolve over time, the researchers said they believe Venus might be very similar to the early Earth and was habitable for a large part of the time. The most optimistic situation is that it has the right temperature, thick clouds, and even occasionally drops , Xiaoxue, .