Asteroid Impact 20 Times Larger Than Dino-Killer Tilted Ganymede's Axis

New research reveals a colossal asteroid strike 4 billion years ago dramatically reoriented Jupiter's largest moon, altering its geological history.

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.