Suppose two civilizations in the galaxy are at war, will we find out?

This is an extremely difficult task, after all, humans cannot determine whether Proxima Centauri has planets or not, so it is even more difficult to find out whether the civilization on Proxima Centauri is at war! However, there are levels of development of civilizations, and perhaps we can simply calculate what level two civilizations need to reach through human technology to be observed by humans!

Goal: Discover a civilization that is taking Star Wars 1,000 light-years away!

Methods for humans to discover if distant stars have planets:

Transit Method. Doppler method.

There is no third way, because human means are really limited, in addition to the super civilization that can make Dyson spheres, the ultra-difficult mass changes that can be observed by humans due to Doppler shifts of light can only be made flashes of light! This method is much simpler than the mass change and movement that produces Doppler shifts, and it is not easy to misreport (humans may think that it is a planetary-level movement and is judged to be a planet), so how much power does it take to find a flash 1000 light-years away?

1. Humans can observe the lowest limit magnitude.

Take the Hubble Space Telescope as an example, its ultimate observation magnitude is 28 magnitude, we take 28 magnitude as an example, when the ** energy release event that exceeds a certain threshold in the war that is being fought by a super civilization reaches 28 magnitude, it will be discovered by human beings!

2. How bright is a 28th magnitude star 1000 light-years away?

Of course, this is a difficult value to measure, but fortunately, astronomers have established absolute magnitude comparisons for us to refer to, so that we can compare the true brightness of individual stars!

Absolute magnitude: Suppose a magnitude that places a star 10 parsecs away (light-years) away is called absolute magnitude! The absolute magnitude of the Sun is!

According to the above formula, we can know that the absolute magnitude of a 28th magnitude star 1000 light-years away is: equal.

and the Sun magnitude difference m = etc.

Then the difference in brightness between the two is multiple.

Assuming that the flash lasts for 1 second and is discovered by humans, then 4.5 million tons (mass loss of the sun per second) would be required

Approximately: tons of mass loss seconds, which can produce a flash of light that can be observed by humans!

This requires 326 tonnes of hydrogen to be completely fused or tonnes of energy produced by the annihilation of positive matter and tonnes of antimatter!

3. What level of civilization is this?

Civilizations that can reach 1 of the sun's power have certainly not yet reached the stellar level, but they have surpassed planetary civilizations, and humanity is still struggling below the poverty line of planetary civilizations!

Of course, such a war between civilizations is terrible, and the destruction of the planet may not be, but the destruction of civilizations is more than enough, and we hope that even if there are civilizations with such capabilities, we hope that they will travel all over the galaxy and not waste time on wars between civilizations! For example, come to Earth to help us improve science and technology?

We will have a very strong electromagnetic wave signal between the two planets, and there will be a lot of electrical signals that we will find.

One light-year is equivalent to 10,000 Earth years, and with the current level of science and technology, the galaxies we observe that are tens of thousands, hundreds, or even tens of thousands of light-years away from us are tens of thousands, even millions, hundreds of millions of years ago. That is to say, there are alien civilizations at war now, and with our technology, it will take tens of millions of years to see it. Now I can't find it at all.

What can't be found is that the current level of science and technology on the earth is difficult to even leave the solar system, and the war between galaxies is out of reach.

If there is an interstellar war in the Milky Way, will humans be able to see it with the Hubble telescope?

In favor of 2+, it feels that the scope involved is 3, the technology control is 2+, and the humanities is 1.

Civilization is not only about technology and energy control, but also about humanity that should be counted but neglected. If the humanities reach 3, there should be no concept of war (a bit like the existence of the Buddha), but the current civilization can not be balanced to assume a high-level civilization.

Basic Information

Star Wars (English: Star Wars), Chinese referred to as Star Wars, is a series of science fiction films produced and shot by American director George Lucas. In the 1970s and 1980s, the characters and stories of the first Star Wars trilogy were based on the Vietnam War and Japanese director Akira Kurosawa's "Sengoku Heroes".

Starting in the late 1990s, he filmed the story of the prequel to the original trilogy. At the same time, he changed the original trilogy into a six-part series.

Ranked between level 2 and 3 according to the Kardashov index, the Galactic Empire has the ability to travel across the galaxy (level 3 civilization trait), but does not have all the control of its own galaxy (level 2 civilization trait).

NC Germany, like what kind of clothing, the name of the troop and so on, don't you think that in the prequel, Palpatine came to power through elections, framed the Jedi rebellion, eliminated political opponents, and finally established an empire, which is the same as the Mamoustache who caused the Arson of the Reichstag after being elected prime minister. And the Soviet Union came to power by domestic revolution, which was completely different.

The central idea of Star Wars