A volcano in Russia's far east on Wednesday spewed ash several kilometres into the sky, authorities said, putting on a spectacular display in its latest eruption.
Sandblasting on Mars: Camera reveals how prevailing winds shape elongated landforms in volcanic zone
Martian winds can have quite an impact. ESA's Mars Express has spotted them whipping up sand grains and acting as a cosmic sandblaster, carving out intriguing grooves near Mars's equator. The ridges, ...
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