So far, the only planet scientists have found in the solar system that is pregnant with life is Earth. In addition, although the other seven planets in the solar system have different environments, none of them are 100% believed to exist or have ever existed, and many people have had hopes for Earth's neighbor, Mars.
Mars is a planet in the solar system with a similar orbital position and composition to Earth, however, when scientists successfully launched the probe to Mars, people can see the true face of this planet, this incomparably arid red planet seems to have died, scientists can not see a trace of life here.
With the development of science and technology, human beings have set their sights on the more distant universe, but to everyone's surprise, scientists have found a huge life similar to a "snail" on a planet on the edge of the solar system, and this planet is Pluto, which has been judged that life cannot exist.
Pluto was once the ninth largest planet in the solar system, its mass and volume are very small, it is understood that Pluto is only one-sixth of the mass of the Moon, one-third of the volume of the Moon, and in 2005, the International Astronomical Organization officially expelled Pluto from the list of nine planets in the Solar System.
New Horizons is the first artificial object in human history to successfully fly over Pluto, and just when this artificial probe was photographing Pluto, it accidentally found a "snail" the size of an elephant on the surface of Pluto.
Moreover, according to the photos transmitted back to Earth by New Horizons, it was found that the head and tail of this "snail" were clearly visible, and, most importantly, the "snail" also left two clear crawling tracks on the surface.
Although many scientists believe that what people see on Pluto is not real life, but nitrogen ice that looks like snails, but some scientists believe that just as there are bacteria on Earth that are millions of times smaller than humans, there may be organisms in the universe that are hundreds of millions of times larger than humans.
Assuming that the average height of an adult man is 170 centimeters and the weight is 65 kilograms, then the height of a creature that is 100 million times larger than a human being is 170,000 kilometers and weighs 6.5 billion kilograms.
Another kind of person believes that in fact, the universe is an incomparably large life form, and the existence of human beings is as small as bacteria, so human beings cannot perceive how big the universe really is.