ESA Reveals City-Size ‘Cosmic Butterfly’ Crater on Mars Containing Signs of Ancient Water

Dec 17, 2025 - 18:00
ESA Reveals City-Size ‘Cosmic Butterfly’ Crater on Mars Containing Signs of Ancient Water
ESA has captured a city-sized butterfly-shaped crater on Mars with smooth wings likely formed by melted underground ice. Studying this rare structure helps scientists understand asteroid impacts, Mars’ surface ice, and the planet’s ancient watery past while offering insight into how unusual crater formations develop on the Red Planet.