City-size 'cosmic butterfly' carved into Mars' surface contains traces of ancient water
SMRTR summary
Scientists discovered a city-sized butterfly-shaped impact crater on Mars, measuring 12.4 miles across, formed when an asteroid struck at an unusually shallow angle millions of years ago. The crater's smooth wings show signs of ancient water interaction, suggesting buried Martian ice melted during the impact and mixed with ejected debris.
SMRTR provides this summary for quick context. The original article belongs to Live Science.
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