Water is composed of two elements: hydrogen and oxygen. Hydrogen is the basic element with the most content and the widest distribution in the universe.

It is said that the first element that exploded from the Big Bang was hydrogen, whose total mass accounts for about 75% of all baryon mass in the universe, and the number of atoms accounts for more than 90%.

Oxygen is also not poor in the universe. It is synthesized from helium in the o cycle and is thrown into space with the explosion of supernova. As long as the conditions are appropriate, the abundant hydrogen in space will combine with oxygen to form water molecules.

Let’s not talk about the planets in the opposite universe, just talk about space.

Through spectral analysis, scientists found extremely abundant water and water ice in the solar system, found evidence of water existence in many places in the Milky Way, and even found a large amount of water around a quasar that is more than 12 billion light-years away from the Earth. It contains 140 trillion times the amount of water that is equivalent to all water in the Earth's oceans.

It can be seen from this that water is not scarce in the universe, and the basis for supporting the survival of alien life exists.

Tabixing is perhaps the best example.

As for the netizens' later discussion about whether aliens have landed on Earth, it is difficult for Chen Yuan to give an answer to this point.

Because, I don't know.

Just like the planet Chen Yuan landed on the Platinum System this time.

Will the civilization on that planet know that there were aliens like humans landed before?

Is the most curious UFO real?

So far, there is no clear evidence that an alien spacecraft has visited the earth.

In fact, since the late 1940s, there have been countless witness reports about UFOs or other "UFOs", and some even claimed with certainty that they were caught by "alien" on UFOs to do experiments.

These alien events ended up in the end. The main reason is that they witnessed some strange weather phenomena or atmospheric optical phenomena, and some saw planes, balloons, sky lanterns, kites, satellites, or celestial bodies such as meteors, bright stars and planets.

There are also some that are purely pranks.

In sharp contrast to the media's hype, the scientific community's reaction to UFO is cold. You can hardly find serious scientists to publish research papers on UFOs. No official agency claims that these things are real. Even the conclusions drawn by some private research institutions are very neutral. They cannot provide evidence that there are indeed them. They just say that those inexplicable cases should be followed up. Of course, this requires funding.

So paying attention to these is nonsense.

People on Earth are looking forward to Chen Yuan finding the Raymonds.

Similarly, Chen Yuan is also looking forward to it.

He and Nuwa landed on the planet wearing tight protective suits.

You should know that there are many unknown bacteria on a strange planet.

If no protective measures are taken and the body is exposed directly, it would be strange if Chen Yuan didn't die suddenly.

"It feels very quiet here." The quiet environment made Nuwa unable to help but speak.

"Well, it's true. Just talk about the scenery here. It's really beautiful. It's not as bad as civilization, so it's like this." Chen Yuan sighed so much.

But he really wanted to find a living thing here impatiently.

In fact, Chen Yuan, like many people, has been curious about how life on Earth was born.

Scientific research attaches importance to empirical evidence. People find key fossil evidence in the evolution of dinosaurs to birds, and conclude that today's bird ancestors were dinosaurs that dominated the earth tens of millions of years ago.

But scientists cannot find fossils of single-cell organisms on Earth billions of years ago, and there is no way to know how the first DNA chain was transformed from organic molecules. All the evidence has been lost in the long geological evolution. So scientists can only guess that the abundant organic molecules in the ocean have completed a wonderful transformation under certain conditions, laying the foundation for the birth of the first cell.

Through research on a large number of space meteorites, it was found that in the early days of the birth of the solar system, there were already a large number of complex organic molecules in the fragments of planetary clouds, including amino acids, carboxylic acids, hydroxy acids, sugar-related compounds, amines, amides and other substances. These molecules have attracted great attention because they are crucial to life and are the basis of proteins.

Although DNA cannot be synthesized in the laboratory using these substances, scientists believe that if the conditions are right, these substances are possible to synthesize proteins in the vast oceans of the earth.

Since there are molecules of water and a large number of organic compounds in the solar system, and there are conditions for forming the same matter on other planets, the possibility of life on other planets being born in other planets and then evolved into intelligent life based on billions of stars in the Milky Way.

In fact, the questions that have always troubled humans were answered by Nuwa.

"You might be curious why you can't find aliens, are you?"

"There is only one answer. For life, the universe is too big, and it is difficult to have the opportunity to meet each other."

"Take the solar system where we live for example, human technology has not set foot on other planets after hundreds of years of rapid development. Our probe has been flying for decades but has not been able to fly out of the solar system. Even if it is safe and sound, it will take 40,000 years to truly escape the gravity of the sun.

You should know that the star closest to us is 4 light years away, and the star system of Tiancang 5, which is more likely to exist in life, is even as far away as 13 light years away! 13 light years are out of reach for humans, but it is not worth mentioning in the entire Milky Way. The Milky Way is a huge galaxy with a span of more than 200,000 light years. Even if it contains 10,000 alien civilizations, the possibility of their encounter with each other can be ignored.

Even if you had a huge radio telescope that could detect radio wave signals hundreds of millions of light years away, can you rely on it to receive radio waves from alien civilizations? The answer is no.

To reach the Earth's electromagnetic pulses in the distant starry sky, it requires powerful energy. This energy often comes from strong rays emitted by neutron stars or black holes. Even if alien civilizations master black technology that can control the energy of stars, they will not be stupid enough to tell the entire universe: Come on! I am here, that's like leading a wolf into the house and killing itself."

"Don't the Via people count?" Chen Yuan was a little stubborn.

"That was taken by someone, and they didn't live in your universe." Nuwa suddenly covered her mouth and became smaller, "So seniors are seniors, and only we ancient humans can discover civilizations in the universe first."

She patted Chen Yuan on the shoulder, "Of course, don't be discouraged. In fact, we have only discovered that less than three civilizations have only been discovered so far. No civilization confrontation is a huge game, which is not a good thing."

"Are you listening?"

Nuwa was a little angry without getting Chen Yuan’s answer.
Chapter completed!