Overview

• The asteroid, estimated to be 300 kilometers wide, created a crater up to 1,600 kilometers in diameter.
• This impact shifted Ganymede's axis by about 7 degrees, redistributing its mass and causing reorientation.
• The collision's massive energy likely influenced the moon's internal structure and subsurface oceans.
• Ganymede's furrowed surface features are remnants of this significant impact event.
• The ESA's JUICE mission, arriving in 2034, aims to further investigate Ganymede's geological history and subsurface oceans.