Scientist: If we can find extraterrestrial life, they may be purple.

On this earth, there are differences between white people, yellow people and black people, and at the same time, there are very few people with blue skin in the world, which is very strange to us.

However, some scientists pointed out: Looking at the universe, we may find more novel creatures. If we are lucky enough to find extraterrestrial life, we may find that they are all purple.

This statement was first put forward by Siladi Tia, a microbiologist at the University of Maryland School of Medicine. Dasama proposed it in 2007. After working with Edward, a postdoctoral researcher at the University of California, Riverside? In the paper written by Schweitmann, Dassama pointed out that alien life may experience a fate similar to that of the earth in the early days, so the appearance of the early earth probably represents a state in which a large number of alien planets gave birth to life.

Their research shows that the early earth may be covered with purple. What causes this phenomenon is a molecule called retinaldehyde.

This molecular structure is very simple. Although its ability to capture sunlight is not as strong as chlorophyll, it has withstood the baptism of years and even spread all over the world. Whether in the ocean or in glaciers, we can see microorganisms containing retinaldehyde.

Their bodies are just purple.

They occupied the earth long before chlorophyll appeared. So before the birth of relatively advanced plants, the earth was occupied by these ancient fungi, showing a planet similar to lavender.

Wei Teman Shi pointed out that this is probably the only way for exoplanets to evolve life. Therefore, it may be more efficient if it is used as one of the conditions for finding aliens and screening exoplanets.

Retinal aldehyde has a characteristic, that is, the frequency of absorbing light comes to an abrupt end when it reaches green. Therefore, if a planet has a large number of creatures containing retinoids, the light it reflects will be green. As long as we find a planet that fits this spectrum, we can think that there is a great possibility of life on this planet.

However, this method also has some limitations. It is only suitable for finding planets that have the same development process as the earth and are just in the gestation period, and this creature just rules the world.

Whether scientists should search for extraterrestrial life in this way depends on their own choice ~