Whenever the idea of searching for extraterrestrial life arises, two basic elements that always take priority are water and oxygen. Now, astronomers have added another interesting ingredient to the list: sugar.
The latest research highlights that scientists have now discovered erythrulose, a four-carbon sugar found naturally in berries, kiwis and other fruits, in a giant molecular cloud close to the center of the Milky Way. Sound exciting? Well, the research, published in the journal Nature Astronomy, suggests that this is the first ever discovery of this type of sugar in interstellar space, and provides new insight into how the building blocks of life are created and distributed throughout the universe.
Moreover, this discovery provides insight not only into how life began on Earth, but also into the possibility of the same chemical processes occurring on distant planets. Scroll down to read the details.
What is erythrulose?
According to science, erythrulose is a natural sugar found in trace amounts in fruits, such as berries, kiwis and pears. It is famous on earth for its role in food chemistry and cosmetics. It is said to be a four-carbon sugar, unlike regular table sugar.
Scientists also claim that it can help produce ribonucleotides, which are the molecular building blocks of ribonucleic acid (RNA). According to the latest research, the discovery of erythrulose in space lends credence to the idea that the universe is full of ingredients necessary for life.
What does the research say?
What the research says about erythrulose
If this research is correct, sugar would have been found in a dense molecular cloud near the center of the Milky Way. For the uninitiated, molecular clouds are vast clouds of gas and dust where stars and planets are born. Scientists often refer to these clouds as cosmic chemical laboratories because they allow simple atoms to combine to form more complex molecules.Researchers discovered it while studying the cloud using two radio telescopes in Spain. In the past, crowded regions made it difficult to detect sugars due to overlapping signals from different molecules. But new laboratory technology using lasers has recently given scientists the ability to reproduce the unique optical signature of erythrulose, making it much easier to find the sugar signature in the cosmic noise. According to the study, the cloud was rich in erythrulose, but there were few signs of three-carbon sugars.
This was not a gradual shift from simple three-carbon sugars to more complex four-carbon sugars.
Why do scientists now look differently at gluconeogenesis in space?
Why do scientists now look differently at gluconeogenesis in space?
Scientists have thought for years that sugars in space accumulate step by step. But new observations have put this theory to the test. Instead, the research team now believes that erythrulose is formed when two smaller organic molecules, each containing two carbon atoms, combine. If this alternative pathway is confirmed, it will change scientists’ understanding of how complex organic molecules form in molecular clouds.
Did sugar from space help create life on Earth?
The origin of the first sugars on Earth remains a mystery to scientists. If we look at previous research, ribose and glucose have been discovered on meteorites and asteroids, and scientists hypothesized that space rock strikes brought many organic compounds to the young Earth. Researchers estimate that in Earth’s early history, meteorites and cosmic dust may have delivered up to 50 million tons of erythrulose to the planet.
What are the takeaways from the search for alien life?
What are the takeaways from the search for alien life
According to experts, this discovery has major implications for astrobiology, the study of the origin of life and the possibility of the existence of life elsewhere in the universe. For the non-scientist, sugars are the building blocks of biology, ribose is the backbone of RNA and deoxyribose is an integral part of DNA. Erythrulose can help produce ribonucleotides, so the fact that it is found in space suggests that some of the basic ingredients needed for life may already have been present long before planets formed.“Finding these sugars shows us that they are more common throughout the universe than we thought,” said lead author Isascón Jiménez Serra, a Spanish astrophysicist at the Center for Astrobiology.
