Mars Boils Over

Science Spotlights

Mars Boils Over

Like water in a pot on a hot stove, the escape of hydrogen from Mars increases from a gentle simmer to a vigorous boil with a tweak of the dial. MAVEN measurements reveal dramatic seasonal variability in hydrogen escape from Mars, which peaks not when Mars is closest to the sun (perihelion) but at southern summer solstice, suggesting a seasonal influence and hinting at a connection to lower atmosphere circulation.

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