1. The answer is yes, but it hasn’t been discovered yet.

From the perspective of life evolution, the birth of the earth is only 4.5 billion years ago, so the evolution of life on the earth is at most 4.5 billion years. Then, there are many planets in the vast universe that are older than the earth and suitable for the evolution of life. Someone has calculated,

There are about 3 billion galaxies in the universe (galaxies like the Milky Way, some are large and some are small), and each galaxy has about 1,000 planets suitable for life.

2. It is theoretically possible, but it has not been confirmed yet.

The basis for the birth of life is organic matter, and organic matter must be composed of at least oxygen, nitrogen, hydrogen, carbon and other elements.

Then, there are definitely not a few planets in the universe that contain these elements. As long as there are suitable conditions, these elements can be combined into organic matter, and then these organic matter will continue to evolve, eventually leading to the birth of life forms.

Take the evolution of life on the earth as an example: Oxygen, nitrogen, hydrogen, carbon and other elements on the earth formed proteins under the action of the sun’s ultraviolet rays and thunderstorms; and coincidentally, the earth is at the right distance from the sun.

So there is life.

Then life evolved further under the constraints of the environment.

Then after N billion years of evolution, humans came into being.

There are trillions of planets in the universe. Therefore, if you find a place in the universe with geographical conditions similar to the earth, there will definitely be a few.

Therefore, we cannot say that there are no life forms other than the earth.

3. According to Mars expert Markus Landgraf.

"It's really possible that life exists" on the red planet Mars.

The chairman of the German Mars Society said in an interview with the German Press Agency in Darmstadt not long ago that scientific observations have proven that bacteria can survive in the harsh environment on Mars.

Landgraf believes that the biggest threat to life on Mars is ultraviolet light.

These ultraviolet rays are not filtered out by the ozone layer in the atmosphere like on Earth.

"Anything that's hit by UV rays will be burned clean."

However, bacteria can survive in this environment.

The scientist said they have discovered such bacteria in many places on Earth over the past few years.

For example, in the permafrost sea of ??Siberia, bacteria have been found hidden under several meters of ice, where light can barely penetrate.

Landgraf said: "Bacteria maintain life there through photosynthesis. This situation is very similar to that on Mars." Landgraf believes that it is very likely that there is an exchange of life between the Earth and Mars.

He said: "We regularly record the impact of Martian meteorites on the Earth, and Earth rocks have also been found on Mars." The scientist believes that bacteria can carry out "interstellar travel" in this way unscathed.

Landgraf used this to illustrate a theory: life on Earth may have originated from Mars.

The environment on Mars deteriorated sharply 3.8 billion years ago, and it was at this time that the first life appeared on Earth.

4. According to astronomical observations, the nebula contains a large number of organic molecular groups.

Large molecules close to amino acids are also found among them.

As for the so-called extraterrestrials (advanced extraterrestrial intelligent life) that have not yet been detected, it is estimated that they will be contacted or discovered one day.

People have not yet been able to find life in space beyond the earth, but scientists still believe that life exists there.

In recent years, through analysis of some meteorites that fell on the earth, it was discovered that there are organic molecules in outer space.

In 1976, there was a meteorite rain in Jilin Province in Northeast my country. After sampling and analyzing the largest meteorite block, organic molecules were also found.

5. What is the basis for searching for extraterrestrial life in the universe?

Whether there is life outside the earth is a mystery of life in the universe that humans have been exploring.

Generally speaking, there are three reasons: First, substances related to the production of life, such as amino acids, organic molecules, methane... have been found in meteorites, comets, and vast spaces outside the solar system, especially

It is the discovery of organic molecules in space that makes this problem more practical, rather than a pure conjecture.

Second, the environment suitable for the emergence of life - planets like the primitive earth are not "the only one with no other branches" in the galaxy, there are also many, many.

Third, once life appears, it will continue to be purchased from low-level to high-level according to the rules of biological purchase, and eventually high-level civilized organisms like humans on earth will be produced.

In 1983, the United States formulated a new plan to explore life on Earth. This was also the largest exploration of extraterrestrial intelligence ever conducted by mankind.

This plan uses three huge radio antennas to receive radio signals from civilized creatures on any other planet in the universe.

In October 1982, 69 scientists from 12 countries, including 7 Nobel Prize winners, issued a call for a worldwide exploration of extraterrestrial intelligence.

The focus is on detecting 773 planets 80 light years away from Earth.

People are waiting for scientists' bold plans.

6. For more than a century, people have been exploring whether other planets in the universe have living matter and organisms like the earth.

As early as the end of the 18th century, astronomers used astronomical telescopes to observe Mars, the closest planet to the Earth, and discovered that there were black lines on the surface of the planet.

Italian Slay concluded: "These are canals dug by people on Mars." Later, these "canals" were drawn in detail by American astronomer Lowell.