Interstellar Objects
Astronomers have detected high levels of methanol and hydrogen cyanide in the interstellar comet 3I/ATLAS, marking the first such finding in an object from beyond our solar system. These carbon-rich compounds, essential for prebiotic chemistry, appear in greater quantities than in typical solar system comets. The discovery highlights differences in this third interstellar visitor's composition.
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European Space Agency's Mars orbiters have observed the third known interstellar comet, 3I/ATLAS, as it passed near the Red Planet. The faint visitor, discovered in July 2025, revealed a glowing coma in images taken from about 30 million kilometers away. Researchers are analyzing the data to uncover its composition and origins.