ExoMars Orbiter Detects Signs of Possible Active Volcano on Mars
Atmospheric monitoring around Mars points to seasonal hydrogen chloride releases and possible geological activity near the planet's largest volcano.
The ExoMars Trace Gas Orbiter detected signs of activity on Mars — the planet may have an active volcano.
The European orbiter has been monitoring the Martian atmosphere. Since 2021, the planet has been slowly releasing hydrogen chloride. Scientists have long observed seasonal variations in this gas.
Gas bursts occurred in unexpected places and at unusual times. They were noticed near the slopes of Alba Mons, the largest volcano on Mars by area.
Researchers found new cracks near the volcano with discolored patches. Gas may seep through them and leave mineral deposits. On Earth, volcanic gas vents leave similar traces.
Mars was previously considered geologically dead, with its interior long cooled. If hot hydrothermal systems exist beneath the newly found cracks, they could provide energy and materials for microbial life.
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Why it matters
AnalysisThe finding could reshape assumptions about Martian geological activity and increase the likelihood of environments capable of supporting microbial life.
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