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flag Cosmic dust is more porous than thought, affecting how molecules form in space, but scientists debate its stability.

flag Cosmic dust, essential to star and planet formation, is more porous and spongy than previously thought, according to a study led by researchers from Heriot-Watt University and Friedrich Schiller University Jena. flag Published in Astronomy and Astrophysics Review, the research indicates that interstellar dust grains are not solid like rocks but resemble fluffy, void-filled sponges with porosities exceeding 99%, based on data from the European Space Agency’s Rosetta mission. flag This high porosity greatly increases surface area for chemical reactions, potentially altering understanding of molecular formation in space. flag However, the findings are debated, as some models suggest such fragile grains may be too cold or easily destroyed to match observed interstellar conditions. flag Scientists agree further research is needed to resolve the uncertainty.

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