Bright Sword starts with the grenade flat.

Chapter 429 Origa Six

After all, all David needs to do is destroy the Covenant, and there will be no evidence. Of course, without David, it is hard to say whether the entire Covenant spacecraft can successfully return to the alien blue planet.

Tu Hengyu did not disappoint Liu Xiu. The virus he developed specifically for artificial intelligence was also very effective. In a blink of an eye, he controlled the self-aware simulated robot David. However, just when Tu Hengyu was controlling the Covenant spacecraft to return to the alien blue planet.

However, in response to Liu Xiu's proposal, Liu Qi, who had been silent all along, spoke up:

"Captain, why don't we destroy the Covenant spacecraft? Then perhaps the alien Blue Planet will be proud of this failure and may even give up the next exploration and immigration! After all, Origa VI is a perfect planet!"

That's right. The main reason why the Covenant chose the planet Origa VI, which is hundreds of light years away, is naturally because the quality of this planet is close to perfect and it is the most suitable planet for human survival.

In fact, the humans on the Wandering Blue Planet are complacent about living on the Wandering Blue Planet before it became a wandering planet. After all, the suitable temperature, sufficient oxygen, and circulating fresh water on the Wandering Blue Planet gave birth to a large number of lives before it became a wandering planet.

However, is Wandering Blue Star really the most suitable "perfect planet" for life? You should know that astronomers on Wandering Blue Star have discovered 24 planets that can compete with Wandering Blue Star for the title of "perfect planet", but this is still due to the observation distance. If the observation distance is large enough, there will be better perfect planets.

When selecting the "perfect planet", the first consideration is the planet's parent star, that is, the star in the star system where the planet is located.

After all, the continuous light and heat provided by the parent star to the planet is the basic condition for the birth of life. Without the parent star, the birth and survival of planetary life is almost impossible. And this primary condition is not met by the parent star of the wandering blue star, the sun.

The sun is a G-type dwarf star, commonly known as a yellow dwarf. Astronomers estimate that its lifespan is only 10 billion years. Of course, this is its lifespan under normal conditions. If it is destroyed by tampering, it would be an accident or a war.

Ten billion years is incredibly long in terms of human life, but it is far from enough for the overall process of life evolution. First, when stars are "young", they emit too much X-ray radiation and ultraviolet radiation. The high-energy radiation destroys complex molecules such as DNA, making it difficult for life to originate.

Take the wandering blue planet as an example. It was not until 3.7 billion years old that it gave birth to the first multicellular organisms, partly because the solar radiation was too strong before that. For the same reason, there is not much time left for the evolution of life on the wandering blue planet. According to estimates, the sun is about 5 billion years old today, but it will enter its "old age" in about 1 billion years. By then, the solar radiation will increase again, making the wandering blue planet unsuitable for living.

If we round it off, the time that life on a wandering blue star can really survive and evolve is only 0 to billion years - it sounds long, but astronomers believe that this is far from enough. Astronomers estimate that if conditions permit, the ecosystem will continue to develop and may last for billions of years, giving life more possibilities. Therefore, the longer the star that provides energy for life shines, the richer the types of life that evolve will be. A star with a lifespan of billion years can only support the evolution of complex multicellular terrestrial life halfway. According to this standard, astronomers have ruled out some unsuitable stars, such as A-type dwarfs with a shorter lifespan than the sun and M-type dwarfs with stronger radiation. The remaining optional stars are only one type: K-type, also known as orange dwarfs, with a mass of to times that of the sun, a lifespan of to billion years, and very little harmful radiation. Although the type is single, there are many orange dwarfs. In the visible starry sky of humans, the number of orange dwarfs is three times that of yellow dwarfs, which provides more options for "perfect planets".

After complaining about the Wandering Blue Planet’s mother planet, the Sun, we have to admit that the Wandering Blue Planet itself also has some imperfections.

First of all, the distance between the wandering blue planet and the sun is not enough to produce beauty. The habitable zone of a star refers to the middle area between the maximum habitable orbit and the minimum habitable orbit. Outside the maximum habitable orbit, the air of the planet will freeze into ice and become a frozen ice block. Within the minimum habitable orbit, the liquid water of the planet will be boiled and become water vapor and escape into space. The center of the two is the most suitable place. In these positions, the planet will retain enough liquid water for a long time. However, the wandering blue planet is very close to the minimum habitable orbit of the sun. If the orbit of the wandering blue planet is one percent smaller, the wandering blue planet will become another Venus.

Secondly, the wandering blue planet is not strong enough. After all, the larger the planet, the larger its surface area and the stronger its gravity, which can bring more advantages to the evolution of life. For example, a larger surface area allows life to have more space to survive and evolve. A planet with a stronger gravitational field can maintain a thicker atmosphere, and the thick atmosphere helps the planet resist more harmful cosmic rays. The terrain of a planet with a large gravity will generally be much flatter than that of a wandering blue planet. This is caused by the greater gravity and the higher degree of corrosion on the planet's surface. A planet with a large gravity can retain more geothermal energy and maintain longer plate tectonics than a wandering blue planet. After all, plate tectonics are also important for maintaining life.

Although the strong gravitational pull will put more pressure on creatures living on land, the stronger atmospheric pressure will allow larger and heavier creatures to stay in the air. Overall, larger and heavier planets will produce more diverse life.

Based on the above points, astronomers from Wandering Blue Star have selected 24 planets from more than 4,600 planets that have been discovered. They are likely to be perfect planets that are more habitable than Wandering Blue Star.

First, they are all located in the habitable zone of orange dwarfs, and second, they have some advantages over rogue blue stars. For example, KOI5276.01, which is more than light-years away from the rogue blue star, is located right in the center of the habitable zone of its parent star, and receives just the right amount of light and heat.

KOI5715.01, which is more than 1 light-years away from the wandering blue star, has a diameter to times that of the wandering blue star and has a gravity that is more suitable for nurturing life.

KOI5554.01, which is light-years away from the Wandering Blue Star, is billion years old and has an average temperature of degrees. Since this planet is nearly billion years older than the Wandering Blue Star, life has had more time to evolve and it is very likely to have given birth to more diverse life than the Wandering Blue Star.

Of course, due to technical limitations, Wandering Blue Star's current understanding of the planet is limited to basic parameters such as distance, size, age, etc., and it knows nothing about its more specific conditions, such as atmospheric composition, internal structure, etc. The reason why Wandering Blue Star can breed so many lives is not just due to superficial efforts. In some aspects, other planets may be far inferior to Wandering Blue Star.

(End of this chapter)