If the galaxy really has life, it would be bad news for us.

The University of Puerto Rico has a planet-habitable laboratory, where scientists use probabilistic methods to infer how likely it is to have extraterrestrial life in the galaxy. The answer surprised us.

The Milky Way is a relatively large galaxy with a diameter of more than 100,000 light years and contains hundreds of billions of stars.

These scientists estimate that at least 100 million planets orbiting these hundreds of billions of stars can support complex life. Note that this refers to complex life.

For the concept of complex life, humans have not given a clear definition, and scientifically, it is generally based on whether biological organisms have mature neural structures. But on the other hand, if there are more than 100 million planets with complex life, let alone those celestial bodies with simple life.

In theory, the Milky Way galaxy may really have intelligent life, because the Milky Way galaxy has about 100 billion to 400 billion star galaxies, and each star system has multiple planets. If we win the jackpot according to the Welfare Lottery, the odds are 1,7220,000 points. Calculated by one, then there are at least 5,543 kinds of intelligent students in the galaxy.

In the Milky Way, about 1% -2% of the planets are more livable than Europa. If the galaxy really has life, for us, there may be less good news.

Although human technology seems to be very advanced in the 21st century, according to the assumption of former Soviet astronomer Nicholas Kaldashev, humans on earth are still at the lowest level of cosmic civilization: they will just dominate the planet and the surrounding satellite energy. In fact, human beings are also very primitive in the science and technology of cosmic exploration, so it is unknown if there are low-level and intelligent life in these 10 billion earth-like planets.