Fifteen years ago, Su Meng's ability evolved to the end.

The upper limit of 30 billion body storage energy, automatically absorbing 1 million standard energy from space every day, and flying at 99% of the speed of light after the body is particle, of course, you can't take people when flying in this state.

Su Meng looked at her sister in her arms, at this moment, her sister was halfway asleep, and she should be able to wake up for several years.

Su Meng's research on space is now very skillful, and she can separate a part of the space to make an amber-shaped space ball, whether it is used to imprison enemies or store items, it is a good choice.

The reason why I say this is because Su Meng accidentally made a space ball, and then found that he could actually put the space ball into his body space. This means that Su Meng can store more substances in the limited body space, the nature of the space ball is that the appearance is like a crystal ball, and the inside is a circular space with a diameter of tens or hundreds of meters, but because the space ball is made by Su Meng's rule-changing power, once the space ball made by Su Meng leaves her body for a few hundred meters and exceeds the range of the rule ability, it will automatically collapse. Of course, if Su Meng put the made space ball into his body space, there would be no problem of collapse.

Su Meng's body space is about more than 10,000 meters in diameter, although it is not large, but once the effect of the space ball is added, her ability to store matter increases dramatically.

Since Su Meng's body space and space sphere are the embodiment of space rules, the heavier the storage mass of the substance, the more cost-effective, Su Meng can currently make the heaviest substance is plutonium-244, plutonium-244 is a relatively stable heavy element, the decay cycle reaches an astonishing 80 million years, so it is very stable.

Among the six isotopes of plutonium, several of them can be converted into uranium, of which plutonium-239 is the best material known to mankind to make a fission nuclear bomb, the minimum only 4-16 kilograms can be made into a nuclear bomb, of course, the greater the weight, the greater the power, there is no definite upper limit.

The nuclear fuel used in the spacecraft made by Su Meng is pure U238, and people on the earth dare not use this pure fission material, but Su Meng dare, because she had conducted tens of thousands of simulations and analyses in her mind before building the reactor of the spacecraft, so as to find the optimal solution, and through the final optimized plan, Su Meng created a super fission reactor with powerful power.

Moreover, Su Meng can reconvert nuclear fuel that has reduced or disappeared into energy, and then remake it into new uranium, so the energy of Su Meng's spaceship has become very durable because of Su Meng's existence.

The coolant used by Su Meng in the reactor is a liquid metal, which can generate voltage and release powerful electrical energy after absorbing energy, which is equivalent to a super-large thermionic energy converter, which can directly convert thermal energy into electrical energy. The nuclear reactor of Su Meng's spacecraft is an amplified nuclear battery, of course, the efficiency and power are much greater, otherwise it would not have the ability to accelerate the spacecraft to 30% of the speed of light in a year.

Su Meng's spacecraft has more than 300 such nuclear reactors, supplying more than 1,000 large ion thrusters on the spacecraft to work, these more than 1,000 thrusters are distributed on both sides and ends of the spacecraft, with more at both ends being used for acceleration and deceleration respectively, and fewer on both sides for fine-tuning directions, and then these nuclear reactors can also provide lighting and ordinary power supply to the spacecraft.

Ionized xenon is the working fluid for ion thrusters, and Su Meng's spacecraft has a large amount of reserves, about 10 million tons, enough for the spacecraft to be used for tens of thousands of years.

The most important thing on Su Meng's spacecraft is the billion tons of nuclear fission fuel, but this is also a helpless thing, after all, if you don't store enough nuclear fuel, then entering the empty universe is equivalent to looking for death.

Although Su Meng learned to make a space ball, the previous planet was not suitable for approaching, so Su Meng finally chose to give up, Su Meng made about a trillion tons of plutonium-244 when she was on Mars and put it in her body space, one trillion tons of plutonium-244 occupies about one-twentieth of the total capacity of her body space, but it is already quite a lot, and these qualities stored by Su Meng can be converted into more than 100 trillion standard energy, even if you build a supership hundreds of thousands of meters long, these energies are enough to use.

Su Meng is about to go to a star with a mass fifteen times larger than the sun, that star is a red star, and it is unknown whether there is a civilization nearby, so Su Meng still has a lot of expectations for this star.

10.7 light years, it takes more than 30 years for Su Meng's spacecraft to get there, and Su Meng chooses to continue researching this part of the journey.

About five years later, Su Meng's sister Su Tian woke up.

Su Meng stopped the time deceleration, and after spending a happy day with her sister, she re-entered the time deceleration state when her sister slept again.

So another 10 years passed.

In the blink of an eye, it was fifteen years, and Su Meng's spacecraft sailed a distance of almost 5 light years, at this distance Su Meng could clearly see the light of the Alpha Galaxy, using high-precision optical equipment, and even saw that there were two huge stars and a smaller star, and that smaller star was Proxima Centauri.

It's really too far away from the Earth, and Su Meng's telescope couldn't see the Earth as early as nineteen years ago, but even at the current distance, the sun can still be seen with optical telescopes, but Jupiter and Saturn have become unobservable.

However, Su Meng's continuous observation of the star she was going to made a breakthrough and found traces of six planets, which made Su Meng feel very excited, thinking that if there was a civilization there, even if it was only a primitive civilization in the stage of biological instinct, it would make her feel better.

Su Meng looked at her sister who was being held by herself, and it seemed that her sister was about to wake up again.

Su Meng put her sister on the bed, at this moment Su Meng's spaceship is in inertial flight, so there is no artificial gravity on the spaceship, Su Meng put her sister on the bed, but her sister just floated there, and even the corner of the bed was not lowered.

Su Meng's mind moved slightly, changing the rules of gravity around him, a gravity equivalent to about one-third of the earth's gravity appeared next to Su Meng, and under Su Meng's will, it became downward, of course, the range of this gravity was only a few hundred meters, but Su Tian was gently pressed on the bed by this gravity.

Su Meng lifted the time slowdown, and Su Tian quickly opened her eyes.

"Sister, how many more years have I slept in?" Su Tian said with a slight expression.

"10 years," Su Meng said.

"Hmm" Su Tian nodded, sat up from the bed, rubbed her hair with her hand, and said, "Sister, we should be in inertial navigation, why do I feel gravity?" ”

"I got it," Su Meng said.

"Oh" Su Tian nodded and said to Su Meng: "Sister, accompany me to watch TV for a while." ”

"Hmm" Su Meng nodded, sat on the edge of the bed with Su Tian, and turned on the switch of the TV with the remote control.

Su Meng was selecting the program list on TV, Su Tian was looking at the screen intently, Su Tian knew what her sister had done for herself, and she had held herself in her arms for more than ten years, but her sister had never been bored, Su Tian was infinitely fond and moved by her sister, at this moment Su Tian leaned on Su Meng's shoulder and snuggled up to her.

"Sister, I will be with you forever." Su Tian said to herself.