Cosmic sugar, Pg2

Key Highlights:

• Astronomers have discovered erythrulose, a complex sugar, in a giant interstellar molecular cloud near the center of the Milky Way galaxy.
• This marks the first time a sugar molecule itself has been found in the vastness between stars, rather than just precursor molecules.
• The findings, published in Nature Astronomy on July 13, suggest that complex chemical ingredients for life can form in extreme space conditions.
• The discovery implies that comets and asteroids could have seeded early Earth with these essential building blocks.

Sugar in Space.png

Detailed Insights:

• While molecules that can lead to sugars were previously found, erythrulose is a sugar, which is crucial for metabolic energy and forming the backbone of RNA and DNA.
• The research utilized powerful radio telescopes and involved a team affiliated with institutes from Spain and five other countries.
• Computer models indicate that erythrulose likely formed on the icy surfaces of dust grains through collisions of simpler molecules like glycolaldehyde and ethylene glycol.
• The presence of erythrulose in space supports the theory of panspermia, where life's components are transported across the cosmos.
• Erythrulose is a chiral molecule, meaning it has distinct right-handed and left-handed versions.
• Investigating the chirality of space-borne sugars could offer insights into why life on Earth exclusively uses one specific handedness for its molecules.

Scientific/Technical Concepts Involved:

• Erythrulose: A four-carbon sugar molecule, a fundamental building block for biological processes.
• Interstellar molecular cloud: Dense regions of gas and dust in space where new stars and complex molecules form.
• Chiral molecule: A molecule that is non-superimposable on its mirror image, similar to a left and right hand.
• RNA/DNA: Nucleic acids that carry genetic information, with sugars forming their structural backbone.