A massive asteroid impact on the solar system’s largest moon Ganymede is a moon larger than Mercury and packed with features ...

However, the exact scale of this impact and its consequences had remained uncertain until now. The asteroid that struck Ganymede was approximately 190 miles in diameter, making it about 20 times ...

Relationships between the surface roughness and reflectivity of geologic units with significant topography provide researchers with information on the geologic and tectonic processes that shaped ...