The easiest place to find aliens

If we assume that a quarter of the Milky Way's 400 billion stars have orbiting planets and only one in four of them has the right conditions for survival, then in The Milky Way system also has billions of planets that exist in extraterrestrial life.

Where do aliens live?

Although so far, there has been no definitive evidence of the existence of extraterrestrial planets, but scientists believe that the following places are easy to find aliens. Best.

Mars

Mars is the most Earth-like planet in the Solar System. Whether past or present, the ability to survive life on the red planet is still extremely large. Liquid water, which is often thought to be an indispensable condition for life to exist, once flowed on this planet.

The most recently published Mars observation images show that, on the cold surface of the red planet , there were traces of water currents. It is worth mentioning that this phenomenon has been determined to have occurred in just over 10 years.

Satellite Europa

Europa is the sixth satellite, orbiting from inside to outside of Jupiter. Europa was discovered by Galileo Galilei and Simon Marius in 1610.

Scientists have long believed that underneath the very smooth and young outer shell of Europa could be an ocean . At the same time, it is thought that in this ocean there may exist extraterrestrial life we ​​are looking for.

So far, humans have only been able to reach Europa with spacecraft that fly across the surface of the satellite, but the remarkable features of Europa make it one of the most likely to exist. The highest life in the Solar System. And in the future, Europa may become the destination of many new human space projects.

Titan satellite

Titan is Saturn's largest satellite. The most obvious evidence shows that the surface of this satellite exists complete lakes in liquid state . Although the water that exists in the lake is unlike Earth's, which is formed by hydrocarbons, they are the ideal place to produce complex organic matter. In addition, Titan's very thick atmosphere also contains many components of life such as nitrogen, .

Enceladus satellite

Enceladus is the sixth largest satellite in Saturn's satellites. Despite its small size, Enceladus is a very capable place to survive.

In fact, Enceladus is one of the three crystals in the Solar System that finds volcanic eruptions . More importantly, the volcanic material that erupts contains a huge amount of water.

This makes the experts believe that underneath the cold surface of Enceladus is an ocean. But places where water exists are, of course, the most livable places.

Tethys satellites

Along with Titan, Tethys is one of Saturn's seven largest satellites. The surface of Tethys is composed of silicate and frozen water. However, it is thought that about 2,000 meters below this surface, Tethys is hiding an ocean of saltwater.

Just like satellites located near other large planets, Tethys is also influenced by the tide. This makes the surface below its surface always have enough heat to form liquid water.

Planet Gliese 581d

Gliese 581d is a planet orbiting the orbit of star Gliese 581 in the constellation Scorpio. This is one of the few planets about the size of the Earth detected by humans discovered outside the Solar System.

The position that Gliese 581d exists is very easy to exist in liquid water. Therefore, it is very likely that this is a place where extraterrestrial beings are hidden.

Callisto satellite

Callisto is the outermost satellites among 4 large satellites (called Galileo satellites) of Jupiter. Callisto is made up of half ice and half water ice, possibly with some volatile tapes such as ammonia. Like Europa, Callisto is said to be able to survive life beyond Earth. There may be microbial life forms that exist in the ocean beneath Callisto's surface.

However, the viability of life on Callisto is not as much as Europa. The underlying reason is that this oceanic layer may not have the solid materials needed for life and lack of heat exchange from the Callisto core zone.

Since 2003, NASA has come up with the idea of ​​a base on Callisto with a factory that can produce fuel for further journeys into space. The construction of a base in Callisto also helps people have a chance. Department to continue exploring the satellite Europa, as well as being able to take advantage of gravity from Jupiter to speed up the spacecraft further away from the solar system.

meteorite

There have been about 22,000 discoveries about meteorites on Earth recorded and many organic compounds have been discovered on those meteorites.

In 1996, a group of scientists announced that they had found clear evidence of fossils on a Martian meteorite found in the Antarctic. This indicates that life may have existed on the Red planet about 3.6 billion years ago. After years of vigorous debate, the story of whether Mars meteorite exists or not remains unanswered.

If this is true, it will lead to a great evidence supporting the Panspermia theory , literally 'life everywhere' , which means life comes from the universe and the planets give exchanging life for each other - 'life' here means bacteria, they are potentially and resistant to harsh environments. Life can exist on another planet, maybe even on a planet close to Mars and then they will find ways to return to Earth to develop.

Kepler-452b second Earth

Kepler-452b, the most Earth-like planet discovered so far, may be warmer, wider, and have surface water.