Voyage of the Stars

At this moment, everyone in the control center knew that the main thrusters were activated and the Hope officially entered the thirty-year deceleration stage.

At this moment, it can be seen from the screen connected to the exterior camera that there is a slight cloud twilight on the surface of the Hope. People know that this is the interstellar dust accumulated in the gaps between the spacecraft by the Hope's constant motion all year round.

This scene was like an old beggar squatting motionless in the corner who suddenly shook his tattered clothes, as if he had regained some vitality.

"Sitting up in shock while dying." For some reason, Yue Yuan, who saw this scene on the screen, suddenly remembered this sentence.

It has been more than nine hundred years, and even though the Hope is just a spaceship, everyone can feel the traces of the butcher's knife of 'time' on it.

The Hope successfully entered the deceleration stage. Although it is in its final years, its skeleton is still strong enough.

It will enter the target star system in thirty years.

The Hope is currently about 900 astronomical units away from the target star. At this distance, the naked eye is still unable to distinguish the target star from other stars.

In the last two months of the deceleration phase, humans on the Hope gradually woke up from hibernation.

At this time, Hope has officially entered the target galaxy.

At this distance, the star Ross 154 has become the brightest star in the sky. When people wake up, they open their skylights and look at this star of hope, with tears in their eyes.

"We did it! After thousands of years, we are finally here!"

After thousands of years, people finally felt the light of stars again.

"Yeah, even though I had a premonition that this day would come, when he actually brought it, it still felt unbelievable. We actually crossed the sea of ​​​​stars and came to another new world."

"It seems like yesterday. My memory is still stuck in the last hibernation."

A day in the cave means a thousand years in the world.

The time difference caused by hibernation makes people who have just woken up feel a little dazed, and they need time to adapt.

In the following time, the dilapidated Hope will end its deceleration phase, then adjust its attitude again and head towards the target planet.

Unlike ordinary people, scientists at this time have already begun planning various explorations of this galaxy. They plan to release all eight satellites in the inventory of the Hope at once. Anyway, for artificial satellites, as long as the target planet where the Hope is parked is determined, they can be rebuilt.

The priority now is: detect, detect, detect again.

The gears of time are not stopping for a moment, and the deceleration phase has just been completed. Like a hen laying eggs, Hope launches artificial satellites one after another towards the rocky planets in the Ross 154 star system. Various telescopes on the Hope , spectrum analyzers and other equipment are also aimed at each planet.

As time goes by, the true face of Ross154 is gradually revealed in front of mankind.

Ross 154, Ross 154, is a red dwarf star. Metallicity -0.07. There are two ways to express stellar metallicity. One is to compare the total mass of all elements in the star except hydrogen and helium with the total mass of the star system, and express it as a ratio. Obviously this method is impossible. A negative number appears.

So the metallicity -0.07 here is another way to express it, which is the logarithmic difference between the iron-to-hydrogen ratio of the star and the iron-to-hydrogen ratio of the sun. Since the iron-to-hydrogen ratio of the sun is equal to zero, for stars with a lower metallicity than the sun, this value is a negative number, and vice versa.

This value of this star today is -0.07, which shows how young it is.

This is also true.

In the observation data returned, scientists saw that it was only 756.3 million years old, making it a very young star. In the life of a red dwarf star, which lasts for hundreds of billions of years, it is equivalent to a newborn baby.

Its autobiographical period is 8.472 days and its escape velocity is 466.29m/s. Spectral type M3V, starting with M indicates that its surface temperature is lower than 3500 Kelvin.

Its average diameter is 12,579.65 kilometers, which is slightly smaller than Jupiter, but its mass is one-tenth that of the sun, which is about 104 times the mass of Jupiter.

There are 7 planets in the Ross 154 star system.

Arranged from orbital distance, they are numbered by humans as Ross 154-1, Ross 154-2, Ross 154-3, Ross 154-4, Ross 154-5, Ross 154-6, and Ross 154-7.

Ross 154-1, the planet closest to the main sequence star, is a gas planet. Its average distance from Ross 154 is only 2,707,243 kilometers, which is equivalent to 0.018 astronomical units. It can be said to be very close, but its diameter is It reaches 118,168.87 kilometers, which is almost as big as a main sequence star. It is a miracle that it was not sucked away by the star as raw material during the formation of the star system.

It is worth mentioning that in the star system Ross 154, there is another giant gas planet that is larger than it, even larger than their main sequence star.

That is Ross 154-5, which is in the fifth orbit. Its diameter reaches 139,800 kilometers. This guy is larger than Ross 154 as a star.

Among the two giant gas planets, Ross 154-1, which is closest to the main sequence star, has no satellites, while Ross 154-5 has a total of twenty-eight satellites, but except for the two closest ones, they are larger spherical rocks. Mass satellites, the others are irregular asteroids with very small masses. Oh, small satellites.

Of course, these giant gas planets and their satellites are not the targets of human beings this time.

Humanity's goal this time is the fourth planet in this star system, Ross 154-4. It is a rocky planet with an average orbital radius of about 0.2 astronomical units, an elliptical orbit, and a revolution period of 101.65 days. That is, 102.65 days of the earth equal its year.

Its diameter is about 10124.6 kilometers, which is slightly smaller than the earth. Its average surface temperature is -118.3 degrees Celsius, but due to the presence of greenhouse gases, the maximum temperature on its surface can reach -70 degrees Celsius.

This is a planet with an atmosphere. The main components are 61.4% nitrogen, 36% carbon monoxide, 2.63% methane, and a small amount of ethylene, ethane, argon, neon, carbon dioxide, etc. The atmospheric pressure is 0.02 atm, which is 0.02 standard atmospheric pressure.

In fact, the sixth planet is a rocky planet like the seventh, but according to detection data, it was found that these two planets do not have satellites, so after repeated analysis, humans chose Ross 154-4 as the anchorage point.

Because it has four asteroids or satellites the same size as asteroids. According to the data sent back by the artificial satellites launched, it was found that they contain a large amount of solid water. The Hope can directly approach them to replenish sufficient water resources for humans. After all, their diameter is only two to three hundred kilometers and their mass is small, so their gravity will not have much impact on the Hope.

Although it is a little far away, it is more stable.

Moreover, there is a huge gas planet in the outer orbit of this planet, which can also provide line of sight cover to a certain extent.

Human beings who have experienced an unforeseen disaster have also learned to protect themselves. Although humans do not know the background of the universe, it is always right to hide it carefully.

After setting the target, the tattered Hope slowly sailed into the star system and slowly moved closer to the orbit of the planet Ross 154-4.

Thank you all for your support, following, recommending, collecting, voting, and commenting! In order not to ruin the reading experience of readers, I rarely put these words in the main text, well, that’s it.