In the classification of stars by astronomers on Earth, there is a type of star called a variable star. The pen "Fun" refers to www.biquge.info star whose brightness and electromagnetic radiation are unstable, often changing, and accompanied by other physical changes.

One of the most striking features of variable stars is the dramatic change in brightness.

It is well known that most stars are almost fixed in brightness. In the case of the sun, the brightness of the sun varies by only 0.1% over the course of an 11-year solar cycle. However, there are many stars that do have significant changes in brightness, which is what we call variable stars.

At present, more than 20,000 variable stars have been discovered, and the famous Cepheid variables, novae and supernovae all belong to the category of variable stars.

Within ten light-years of the solar system, variable stars also exist. The most famous is the UV Flare Cetus, which is also the eighth closest neighbor to Earth.

And the Ross 154 star that Tang Feng has arrived at now is also a variable star. However, Ross 154 is not only a variable star, but also a relatively rare red dwarf variable star. The average time between its two great flashes is 2 days.

Ross 154 has a mass of about 17% of the Sun and a radius of about 24% of the Sun. Earth's astronomers have deduced that it may be a younger star, no more than 1 billion years old, based on its high rotation rate. The abundance of elements heavier than hydrogen is about half that of the Sun. Because of its extremely strong magnetic field, Ross 154 is also an X-ray source.

The Ross 154 star system is a fairly young star system, and its main sequence star Ross 154 is less than 1 billion years old, which is a star system with a lifespan of more than 10 billion years.

Perhaps it is precisely because of the youth of Ross 154 that Tang Feng did not find any massive companion stars or moons in this star system, and Tang Feng could even see some residual nebulae in many airspace.

These nebulae are the mother of the star and the entire star system, and the sun was born in a nebula. Today's Ross 154 galaxy is following the path that the Sun once walked.

However, inside the Ross 154 star system, the scenery is extremely spectacular. Because this galaxy, which has not yet fully entered the plateau period, is constantly undergoing violent fusion phenomena. Next to the larger satellites that have appeared, there is almost always an extremely beautiful ring of satellites.

Just like the largest gas planet in this star system, this gas planet, which is not much smaller than Uranus, is the largest moon in this star system, about the same color as Saturn, but around this earthy yellow gas planet, the orbit of the moon is even more spectacular than Saturn.

Obviously, in this immature star system, this earthy yellow gas planet has a large enough gravitational pull to attract a large number of interstellar dust and small celestial bodies to its side, which is why it constitutes such a spectacular moon ring.

Of course, this gas planet, like the immature Ross 154, is also in a stage of rapid growth, and perhaps in a billion years, this earthy yellow gas planet can "swallow" all the large rings of moons around it, and even this gas planet will eventually grow into a gas giant about the size of Saturn.

With the exception of this most eye-catching gas planet, there are no more large objects in this star system. The largest rocky planet is about the size of the Moon. Similarly, around this gray-red rocky planet, there are also spectacular rings of moons.

In a mature solar system, such a spectacular scene will never be seen. Planets with satellite rings are all gaseous planets like Saturn and Uranus, and rocky planets do not see the existence of satellite rings at all.

But in the Ross 154 system, spectacular rings of satellites can be seen everywhere. These rings of moons are also the "food source" for the growth of the planets. As the Ross 154 star system grows, these rings of satellites will be completely captured by the planets, and will eventually have the most spectacular collision with these planets, and then completely merge with the planets.

For Tang Feng, whether it is young, prime, or old, Tang Feng will not let go of the law of unity. In fact, let alone a red dwarf, Tang Feng's current appetite is meaty, and even the brown dwarf Tang Feng has no intention of letting go.

So ten days later, the young star system was once again in Tang Feng's hands. At this point, Tang Feng's hands have controlled the sun, the three stars in the second middle school of the South Gate, the "escape star" Barnard star, and the young and restless Ross 154 star like a calf.

These six stars were not enough to make Tang Feng's big net complete, so Tang Feng did not hesitate to leave, this time his target was the Ross 248 star system, which was very close to the Ross 154 star.

From Earth, Barnard's galaxy, Ross 154, and Ross 248 are all in the same direction. The Ross 154 galaxy is about 9.68 light-years from Earth, while the Ross 248 galaxy is 10.4 light-years from Earth. The distance between these two Ross xxx galaxies is just under 0.8 light-years.

Ross 248 is a bit larger than Ross 154, but it is also a young star. If it weren't for the slightly greater distance between the two stars, it would be more appropriate for the two stars to be considered a binary star system.

Ross 248 is slightly larger and more massive than Ross 154, but it is also a young star. Perhaps more than a billion years ago, these two stars were born at the same time in the same huge nebula. It's just that the area of this nebula is too large, and two accretion regions with enough mass have been formed at the same time, so that two different stars are gradually formed.

However, there is no need to inquire about the origin of Ross 248 stars for Tang Feng, whether you are a double star or a triple star, as long as Lao Tzu arrives, then obediently come to Lao Tzu's arms!

Also ten days later, Tang Feng left the star system 10.4 light-years away from Earth with satisfaction. controlled the 248 stars of Rose, at least in the direction of this line, Tang Feng's big net has basically formed a coherent line.

Although it didn't take much time to control the three star systems this time, counting the time spent on traveling and drawing star maps, it took Tang Feng almost two months to go back and forth.

Therefore, after Tang Feng returned to Earth, he rested a little, and drove the Nautilus straight to the two binary star systems Wise-J1049, which had just been discovered not long ago. (To be continued.) )