The current situation is more complicated. The temperature inside the spacecraft is slowly decreasing, but it will no longer decrease after it reaches a certain level, because there is a lot of magma at the bottom bottom, which is heating all the time!
Moreover, after people blocked some entrances and exits, the temperature tended to rise again.
Fortunately, the purple metal that came with Noah has good heat resistance and insulation, so the heat was not transmitted to the radiation wall and humans were not cooked.
The internal environment is very bad and needs urgent repairs. This problem should not be big.
The external environment can only be said to be very strange... From time to time, high-energy gamma rays pass by outside the spacecraft, and sometimes they hit the spacecraft again, increasing the kinetic energy of the spacecraft.
Scientists estimate that Noah is flying through space at an extremely high speed.
Yes, extremely high!
This is no joke, it can even be said...close to the speed of light!
"According to calculations, it should be more than 0.98 times the speed of light! We are sailing at 0.98 times the speed of light!"
When talking about this, a group of scientists even forgot about their many worries, looked enthusiastic, and exclaimed that it was an eye-opener.
Thanks to supernova explosions, mankind is marching into unknown outer space at an unprecedented high speed!
The explosion of stars is really a powerful driving force, much more powerful than the explosion of nuclear bombs...
At 0.98 times the speed of light, the relativistic effect is already very serious. In this case, the dynamic mass of the spacecraft has changed from the original 1.0386 million tons to 5.2191 million tons, which is about five times the original amount.
In other words, Noah received more than 4 million tons of mass from the supernova explosion, and all of this mass was converted into kinetic energy of the spacecraft.
It sounds exaggerated, but actually it's normal if you think about it carefully. Noah's volume is so large and its density is almost zero (about 0.000073 kg/cubic meter), so it can easily be pushed by infinite light pressure.
The mass of 4 million tons is not much. When the sun burns normally, the mass consumption in one second is this number. Now that the energy of the sun for 10 billion years has been released instantly, what Noah received is only a drop in the bucket.
A drop in the bucket, equivalent to only one part in three billion.
But this kinetic energy is simply ridiculously large for humans. It is impossible to stop the spacecraft just by ordinary deceleration methods!
Rocket pushing in reverse? Don’t even think about it!
Fortunately, due to the peculiar properties of Noah, there is a "transcendent deceleration plan". As long as the material is thrown out, the spacecraft can quickly decelerate.
So humans don’t worry about slowing down at all. For humans, the most important thing is to find a rich earth-like planet on the way forward, then stop, and keep mining, mining, mining...
Talking about this, several scientists discussed it casually.
"Encountering a planet? Easier said than done... The universe is empty after all. The probability is very low!"
"Yes, but the speed of our spacecraft will only be faster than 0.98 times the speed of light, not slower. Because large-scale detection equipment cannot detect Noah, we cannot accurately estimate it. This is just the most conservative estimate."
"...Maybe it's faster!"
"The time dilation effect caused by high-speed navigation can expand our search range..."
Yu Yifeng sighed and nodded again.
The mysteries of the universe are endless, one of which is the "relativistic effect" under high-speed motion.
The speed of light is a very magical speed. Even in a sub-light spacecraft, if you observe a beam of light inside or outside the spacecraft, you will find that its speed is still the speed of light relative to the observer. No matter the direction of movement of this beam of light relative to the observer
No matter whether it is in the same direction, it is still the speed of light no matter what... This is the principle of the invariance of the speed of light in the theory of relativity.
"Relativistic effects" are further divided into "time dilation", "scale shrinkage" and "dynamic mass". For a high-speed moving object, if you observe it from the stationary side, you will find that its time will expand and its size will shrink.
Quality will increase!
But high-speed moving objects themselves have no feelings.
"The time dilation effect is very beneficial for interstellar navigation. At 0.98 times the speed of light, the time we feel becomes one-fifth of the original time, which is very helpful for spanning long navigation times."
"The 3 months we feel are 15 months in the outside world. So, according to the outside timeline, we are 15 months away from the explosion of the sun! We are 1.3 light years away from the original Mars!"
Speaking of this, many scientists feel very amazing. This is a very obvious relativistic effect that humans have truly experienced. And such relativistic effects are a good thing for humans, which means that they can fly farther in their lifetime!
Flying farther means the greater the probability that humans will encounter planets or stars!
"If we encounter an ordinary meteorite group, forget it... We must encounter a rich enough planet before we can stop."
"Yes." Yu Yifeng also agreed. If they don't run out of resources, they will never be satisfied with some ordinary meteorites.
The opportunity to operate at such a high speed is a once-in-a-lifetime opportunity. Once humans slow down the spacecraft, they will no longer be able to accelerate it to such a high speed.
Humans do not have the ability to detonate another star to propel a spacecraft.
Therefore, people must find a good place to stay and cannot be satisfied with small meteorite groups.
Yu Yifeng has made up his mind that people will develop into a real interstellar civilization at a new starting point!
For ordinary people, the current psychological experience is very strange. Although the ultra-high-speed movement of the spacecraft has not changed people's daily lives, in everyone's mind, there is quite a feeling that one day in the sky and one year on the earth. (At close to the speed of light,
In the spaceship, all physical phenomena are the same and do not change people’s daily lives.)
There is a very famous conjecture called the Twin Paradox. The content is as follows: There is a pair of young twin brothers. One of them boards a spaceship and travels in space close to the speed of light, while the other stays on the earth.
As a result, when the traveler returned to Earth, he found that his brother who stayed on Earth was already sixty years old, and his age had only increased by one year.
This twin paradox is caused by the "time dilation" in the relativistic effect.
Because of this psychological experience, another wave of learning frenzy for the theory of relativity was triggered...
However, what the new government is most concerned about is still wanting to know what the starry sky is like outside and where humans have been. But there is no way to do it now, not even scientists can do it.
At such extremely high speeds, in addition to the high-energy radiation from the sun, even other particles in the universe are also very dangerous.
The universe is close to a vacuum, but there are also a small number of particles. The number of particles per cubic centimeter in interstellar space is about 1. In the vast void between the Milky Way and other galaxies, the number of particles per cubic centimeter is 10 minus
6, that is, there is only 1 particle in 1 cubic meter.
For a sublight-speed spacecraft, these almost stationary particles are simply a nightmare. If the two collide, an explosion will occur to a certain extent!
Although the explosion power of a single particle is not high, the cumulative effect is like a continuous bombardment of TNT explosives.
Therefore, the surface of Noah is exploding all the time, and its speed is gradually decreasing, but this decreasing process is extremely slow. Moreover, after the high-energy rays from the sun hit Noah, they will still provide it with some kinetic energy.
For this reason, no detection instrument can directly detect Noah, otherwise it will be directly smashed into pieces by interstellar particles or high-energy rays!
Even with a gravitational wave telescope, the gravitational waves from outside cannot be felt inside the spacecraft, so they must be detected.
Scientists are trying to figure out how to solve this problem.
The simplest way is to place the large-scale reconnaissance instrument on the side facing away from the direction of Noah's movement. At least interstellar particles will not be able to hit it...