A recent study has uncovered that a colossal asteroid impact, occurring approximately 4 billion years ago, dramatically altered the rotational axis of Ganymede, the largest moon in our solar system.

An ancient impact Ganymede has long intrigued Hirata, who said he believes uncovering its evolution is “meaningful.” The moon’s surface is a study in contrasts, with bright regions of ridges ...

This impact that caused Ganymede to shatter hasn't left an obvious crater because it basically splashed the surface, which filled in the hole soon afterward. And that's where things get interesting.

New simulations show that Jupiter's massive moon Ganymede was knocked off its axis when it was struck by a roughly ...

Hirata estimates the consequential process unfolded over approximately 1,000 years following the asteroid impact. The space rock likely crashed into Ganymede at an angle of 60 to 90 degrees and ...

Expert: 'Giant impact' hit Jupiter's moon Ganymede. The impact of a large asteroid – Hirata's computer simulations suggest the asteroid measured 186 miles in diameter – could cause the moon to ...

A graphic depicting the asteroid's impact with Ganymede. The location of an asteroid impact on Ganymede is almost precisely on the meridian farthest away from Jupiter, implying that it had ...

“The Jupiter moons Io, Europa, Ganymede and Callisto all have interesting individual characteristics, but the one that caught my attention was these furrows on Ganymede,” said Dr. Naoyuki Hirata, who ...

An ancient impact Ganymede has long intrigued Hirata, who said he believes uncovering its evolution is “meaningful.” The moon’s surface is a study in contrasts, with bright regions of ridges ...