Science and Exploration

Bennu

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NASA scientist analyzing a glowing meteorite sample, with a backdrop of stars and the cosmos, symbolizing the extraterrestrial origin of Earth's life-essential elements.
Earth & Environment

NASA scientists discover how Earth gained life's essential elements

Scientists have confirmed hexamethylenetetramine (HMT), a key precursor to complex organic molecules, in three carbon-rich meteorites.

Mateo Rojas·June 4, 2026