来自MSN5 个月
Asteroid 20 times bigger than dinosaur killer altered Ganymede's position
He added that the impact affected the interior structure of Ganymede "significantly". This is clear from the size of the transient crater as it makes up for 25 per cent of the size of Ganymede.
ExtremeTech on MSN5 个月
Massive, Ancient Asteroid May Have Smashed Into One of Jupiter's Moons
"The giant impact must have had a significant impact on the early evolution of Ganymede, but the thermal and structural ...