Astronomers have made a sweet discovery in the vast space between stars. Erythrulose, a type of sugar also found in raspberries and self-tanners, has been identified in the interstellar medium. These clouds of gas and dust linger between stars.
Sugar is more than a sweetener for tea or doughnuts. Different types energize cells and are fundamental to DNA formation. Scientists are eager to understand how sugars form since they’re crucial for life.
Researchers used two radio telescopes in Spain to study a large gas cloud near the Milky Way’s center. By comparing telescope data with lab samples, they detected the sugar in gas form. This discovery adds to the sugars found in space, an area traversed by NASA’s Voyager spacecraft, the most distant explorers from Earth.
The findings were published in Nature Astronomy. Scientists have previously found components of genetic material and cellular parts in the galaxy. About 25 years ago, they discovered a relative of table sugar near the Milky Way’s center. NASA’s Osiris-Rex mission collected asteroid Bennu samples containing other sugars, including one crucial for DNA.
While this sugar isn’t vital for life, it can transform into a form believed to help initiate life on Earth. Astrophysicist Erika Hamden from the University of Arizona described it as a complex sugar and a clear example of the material present in the galaxy.
These studies focus on comprehending how life began. Did distant comets or space rocks bring necessary materials here, or were they already present, leading to the formation of our solar system? This new finding supports the latter.
Researchers aim to find more space-borne sugars and learn about their transformations. Discovering sugars in one location implies their existence in other galaxy parts, says Izaskun Jiménez-Serra, an astrophysicist at Spain’s Center for Astrobiology.
“The key ingredients for the origin of life could be present in other regions across the galaxy, opening the possibility for life to develop elsewhere in the universe,” Jiménez-Serra stated.
The Associated Press Health and Science Department is funded by the Howard Hughes Medical Institute’s Department of Science Education and the Robert Wood Johnson Foundation. AP maintains full responsibility for its content.

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