The study of chemical elements, molecules, and reactions that occur in space, including in stars, planets, and interstellar clouds.
From astro- (star, space) combined with chemistry. This is a modern scientific term formed in the 20th century as astronomers began analyzing the composition of celestial objects.
Astrochemistry revealed something mind-blowing: the same elements and molecules we find on Earth exist throughout the universe—we're literally made of stardust that followed chemical laws.
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