The universe is vast. The earth is one of the eight planets in the solar system, and the solar system is one of the many galaxies in the Milky way. The diameter of the Milky way reaches 200000 light-years. For human beings, this is an exaggerated and desperate figure. Many people think that human beings may never be able to get out of the Milky way. In fact, it is too far away for human beings to get out of the Milky way. We are far away from the sun now This little galaxy is not going out.
Although we can’t get out of the Milky way, we have astronomical telescopes and other observation equipment. We can also see the vast beauty of the Milky way and some cosmic scenes and celestial bodies outside the Milky way. The Milky way is a huge and magnificent bar spiral galaxy, with more than 100 billion stars scattered around the bar core of the Milky way.
There are innumerable stars in the universe. Generally, these stars, like the sun, move periodically around the supermassive center of their own galaxy However, there are also some unfortunate stars that will accidentally approach the central black hole and either be torn into pieces or accelerated by the black hole. These super high speed stars can reach a speed of 700 kilometers per second, which is far higher than the escape speed of 420 kilometers per second of the Milky way. Therefore, these stars will fly out of the Milky Way sooner or later.
These stars flying out of the Milky way will enter other galaxies. Similarly, objects from other galaxies often enter the Milky way. Recently, when scientists analyzed the detailed data of 1.7 billion stars in the Milky Way collected by the European Space Agency Gaia satellite, they found that more than a dozen extragalactic objects are flying towards the milky way at ultra-high speed.
What are these unidentified objects close to the Milky way? By analyzing their trajectories and velocities, some scientists believe that these objects may come from the Large Magellanic nebula or distant galaxies. They may also be unlucky. They are attracted by the super mass in the center of the galaxy where they are located and accelerated. Finally, they escape from the galaxy and become stray objects, which is just in the direction of the Milky way.
Some enthusiasts who like to study extraterrestrial civilization think that these ten unknown celestial bodies may be the aircrafts of extraterrestrial civilization, and the universe is vast. Although human beings have not found extraterrestrial civilization up to now, scientists have always believed that there are extraterrestrial civilizations in the universe. Human beings are only one of all the civilizations in the universe, and may still be a relatively low-level civilization.
For human beings, the Milky way is too big. 200000 light-years away, it needs to fly faster than light to go out. However, for some advanced civilizations in the universe, the Milky way is not big. Among the many galaxies in the universe, the Milky way is also a relatively small one. It’s not hard for advanced civilizations to come to the galaxy from distant galaxies.
Many people think that these 10 high-speed flying celestial bodies may be natural celestial bodies from other galaxies, mainly because they are huge. If you think about what can be observed by human observation equipment, it must be extremely huge. The size of these 10 odd celestial bodies must exceed that of the earth. Many people’s subjective judgment thinks that they are the heavenly bodies of the universe I don’t want to be on a spaceship.
Planetary spaceships and even starlike spaceships are far beyond the imagination of human beings. Such a civilization cannot be built. However, if it is a high-level civilization in the universe, it may not be a big problem. For high-level civilization, it is not too difficult to build a planetary or stellar spaceship. Scientists once found some unidentified objects near the sun, which are larger than the earth. Later, through observation and analysis, scientists said that these unidentified objects may be alien spaceships, and they are close to the sun to collect energy from the sun.
Therefore, the more than 10 unidentified objects flying towards the Milky Way observed by the scientists above may be real objects, or natural objects escaped after being accelerated by black holes in the center of other galaxies. Another possibility is a huge alien spaceship. As for what these alien spaceships came to the galaxy for, it is not known.
The universe is so big that it’s normal for other alien civilizations to exist. The universe has been 13.8 billion years since the big bang. In such a long time, the first ancient civilizations may have developed for at least several billion years. It took millions of years and billions of years for human beings to come out of the earth. We can’t imagine such an alien civilization. They have developed The extent of the exhibition may be beyond our imagination.
For such an ancient alien civilization, the distance of the universe may no longer be a problem, and the universe no longer has secrets for them. They can go anywhere in the universe. Hundreds of thousands of light years is an unimaginable distance for us, but for the top civilization in the universe, it may only take a few days to reach.
The more we know about the universe, the more we will feel small. We have just stepped out of the earth and launched Voyager 1 in search of extraterrestrial life. But now we will never do such a thing, because this kind of behavior is dangerous and it is easy to expose the position of the earth. Now many scientists want to take back voyager-1, but unfortunately it has been flying for 41 years, and we can’t get it back. Maybe in the near future, it will be captured by alien civilization, and the existence of human beings and the coordinates of the earth will also be exposed, so it will be an unknown place to welcome the earth.
Guys, what do you think these more than 10 people who are flying towards the earth don’t know? Welcome to leave a message below to discuss and express your unique opinions and opinions.