Scoria Cones on Earth and Mars
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Scoria Cones on Earth and Mars

Since the 1970s, planetary geologists have known that volcanic features cover large swaths of Mars. Early Mariner 9…
A deep image of interstellar Comet 3I/ATLAS captured by the Gemini Multi-Object Spectrograph (Credit : International Gemini Observatory/NOIRLab/NSF/AURA/B. Bolin)
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The Comet From Another Star

Something arrived in our Solar System last summer that had been travelling for longer than the Earth has…