ExtremeTech on MSN5 个月
Massive, Ancient Asteroid May Have Smashed Into One of Jupiter's Moons
Close-up of the craters and furrows on Ganymede's surface. Credit: NASA/JPL-Caltech/SwRI Aside from being the biggest of ...
来自MSN5 个月
How a monstrous asteroid forever changed the trajectory of Jupiter's biggest moon Ganymede
This impact created a transient crater between 870 miles and 1,000 miles in diameter on Ganymede’s surface. Transient craters are the cavities formed immediately after the initial impact ...
DLR1 年
The GALA altimeter
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 ...