나트륨
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[APOD/NASA] 화성의 나트륨 꼬리science 2022. 5. 6. 02:11
Mercury's Sodium TailImage Credit & Copyright: Sebastian VoltmerExplanation: That's no comet. Below the Pleiades star cluster is actually a planet: Mercury. Long exposures of our Solar System's innermost planet may reveal something unexpected: a tail. Mercury's thin atmosphere contains small amounts of sodium that glow when excited by light from the Sun. Sunlight also liberates these atoms from ..