Road to science and technology

Yue Yuanzhou doesn't know whether there is any relationship between the two, but he did not continue to launch sophons from a long distance.

Just now, he suddenly noticed the differences that often appear in different universes. That is warp speed navigation. Just like in this universe, the upper limit of warp speed has become the speed of light.

But other jumps, such as the jump achieved by folding space and time, can be realized in every universe, and the difference in space and time is so huge.

It's okay to say that the Trisolaran universe was caused by the war, but the same is true for this universe and the current universe where the Shenzhou civilization is located.

Before he could figure it out, a prompt sounded, and then a cosmic microwave background image appeared on the projection screen.

The detection results have come out.

Although the universe is vast, with the capabilities of the current Shenzhou civilization, it is still very fast to map the cosmic microwave background after detection. After all, the light is there.

Yue Yuanzhou stopped, stretched his hands toward the projection screen and made a few zooming movements, and then carefully looked at the parameters in the picture.

The cosmic microwave background radiation is the electromagnetic radiation left over from the Big Bang. It is a kind of black body radiation. Black body radiation is also called thermal radiation.

It is also the oldest light in the universe. The amount of this light is almost the same in all directions, but there are also subtle differences. The spectrum at different angles contains the same anisotropic differences or irregularities. Through these subtle residual changes, Yue Yuanzhou It is possible to judge the anisotropic difference of the cosmic background.

These ancient lights were radiated into the universe after photon decoupling when the universe was still young. About 380,000 years after the Big Bang, stars and planets had not yet formed, and the universe was filled with dense and high-temperature white-hot hydrogen gas clouds and plasma.

The plasma gradually cools as the universe expands. When the universe cools to a certain temperature, about 3740 Kelvin, which is about 3466.85 degrees Celsius, protons and electrons combine to become neutral atoms. These first atoms in the universe no longer absorb thermal radiation. , so the universe gradually becomes clearer.

This process is also called the reverse process of ionization. At this stage, because a large number of electrons are bound by atomic nuclei, the scattering rate of the initial photons in the universe decreases during the propagation process. The photons at this time no longer interact with the large number of free electrons before. So a large number of photons began to run wildly across the universe like wild horses.

The information they carry allows the Shenzhou civilization to accurately measure the universe.

Now it was measured in detail by the Shenzhou civilization and then presented to Yue Yuanzhou.

"Oh, it's actually a millimeter wave. It's really a young universe!" Yue Yuanzhou muttered. In the cosmic microwave background radiation map in front of him, these microwave wavelengths have only been stretched to the millimeter level.

We must know that the wavelength of the microwave background radiation of our universe has reached centimeter level, which means that the universe has not expanded to that stage yet.

Not only that, Yue Yuanzhou also saw that the current temperature of the universe is actually 288.27845 Kelvin, plus or minus 0.00097 Kelvin.

This data shows that the temperature of the universe here is 15.13 degrees Celsius, which is only 10 degrees Celsius lower than normal temperature. You must know that the normal space temperature is minus 273.15 degrees Celsius.

Yue Yuanzhou can read a lot of information from just a temperature data.

For example, the age of the universe, the distribution of dark matter in the universe, the distribution of various large-scale materials, etc.

Of course, the most important thing is the meaning of this temperature.

"The almost permanent space in the universe means that a large number of life will be born in the universe at this stage?" Yue Yuanzhou first thought.

According to normal people's thinking, water is the source of life, and in an environment of 15.13 degrees Celsius, water is all liquid.

Yue Yuanzhou touched his chin and said to himself: "The Cambrian period of life in the universe?"

After pondering for a moment, he connected to the Dragon Scale communication and said: "Old Dragon, continue the detection, we need more data."

From here, Yue Yuanzhou can roughly determine the age of this universe, but he needs more precise values.

"Okay, it has started, but it will take some time. Primitive gravitational wave detection is slightly more difficult than microwave detection." Long Lin replied.

Yue Yuanzhou nodded secretly after hearing this, and then continued to analyze the data while waiting for the results of the original gravitational wave detection.

There are only two types of waves that can propagate on a cosmic scale, one is electromagnetic waves and the other is gravitational waves.

The cosmic microwave background radiation is the light from the Big Bang at the beginning of the universe, so the primordial gravitational waves are the gravitational waves produced by the Big Bang at the beginning of the universe.

By detecting and analyzing these two waves, we can know the past of the universe.

Yue Yuanzhou temporarily left Sophon's lost contact to Gongsun Xing to deal with. He is now more curious about the past of this universe, because after determining the microwave background temperature of the universe, he suddenly felt that these matters should be connected.

Of course, the possibility of a great god-level civilization cannot be ruled out, but the fact that no civilization has come to the door so far may explain the problem.

Taking advantage of the time to detect the original gravitational waves, Yue Yuanzhou planned to find the reason why Sophon lost contact.

But as soon as he had this idea, he saw Gongsun Xing suddenly turn around from the workbench in front of her, and then said in a panic: "Leader, ultra-long distance quantum communication has failed!!!"

"What?"

Yue Yuanzhou suddenly turned around and looked at Gongsun Xing's beautiful face with some disbelief, as if he wanted to see from her face whether she had said anything wrong.

However, at this time, Gongsun Xing lightly opened his thin lips and said while opening and closing his teeth: "After you stopped the transmission of the second sophon just now, we sent other deformable detectors to nearby galaxies, but after these detectors sailed for a period After a long distance, we found that all the above distance quantum entanglement communications were wrong."

"Fortunately, we plan to fly the detectors a certain distance, and then turn them into various instruments to help Director Long Lin detect the original gravitational waves and then jump over, otherwise these deformation detectors will lose contact just like sophons!"

The more Yue Yuanzhou listened, the more frightened he became. He simply walked behind Gongsun Xing, looked at the projection on her workbench, and said in surprise: "In other words, the sophon lost contact because of the failure of ultra-long distance quantum communication!"

"Yes," Gongsun Xing turned around and pointed at the projection screen and said: "It has been confirmed that it actually failed before it was sent out, but at that moment because we did not maintain communication, we did not notice it. Now it is not only Sophon , even all the over-distance quantum entanglement phenomena on the Infrastructure have become unpredictable."

"But fortunately, our sophon and neutron microscopic detectors are equipped with dual-channel communication. In addition to ultra-distance quantum entanglement, there is also micro-gravitational wave communication, so in fact, the sophon should not have lost contact. It is just waiting for us to pick up here. It is estimated that the signal will be received eighty-one years later."

The time and space jump uses coordinate positioning and then forcibly folds the time and space for transmission, so it has no impact. However, it will take eighty-one years for the sophon that has jumped 81 light-years away to send back the message.

Yue Yuanzhou took a deep breath, feeling like he was back before liberation.