火星では「ダストデビル」と呼ばれる砂ぼこりの渦（うず）がたくさん発生しています。
On Mars, many dust whirlwinds called dust devils occur.
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Recently, European and Russian probes have examined photos of Mars from the past 20 years and discovered that dust devils are moving at about 160 kilometers per hour.
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This is much faster than what was previously known.
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Dust devils occur when the surface of Mars is warmed by the sun, causing warm air to rise and swirl, lifting red sand and dust into the air.
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Dust devils also exist on Earth, but on Mars, they occur more frequently and move faster.
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The research team discovered more than one.
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000 Observe dust devils occurring in various locations on Mars and create maps of them.
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In particular, they often appear in the wide and flat region known as the Amazonis Planitia.
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Dust devils mainly appear in spring and summer, and they occur around 11 a.m. to 2 p.m.
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The atmosphere of Mars is much thinner than that of Earth, so humans would not feel strong winds, but sand and dust can be blown high into the air.
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This has a significant impact on the climate of Mars and the activities of spacecraft.
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For example, if dust accumulates on the solar panels of a probe, it may stop functioning.
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今後の火星探査の計画にも役立つ情報です。
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