description Gilgamesh (Ganymede) Overview
Gilgamesh is a massive impact basin located on Jupiter’s largest moon, Ganymede. It represents one of the most significant geological features there, characterized by a prominent central pit and a vast area covered in ejected material. The crater's size – approximately 260 kilometers across – makes it notable for understanding the early bombardment history of the solar system. Scientists study Gilgamesh to learn about Ganymede’s formation and its subsequent geological evolution.
help Gilgamesh (Ganymede) FAQ
On which celestial body is the Gilgamesh crater found?
The Gilgamesh crater is located on Ganymede, which is Jupiter's largest moon and the largest moon in the Solar System. Ganymede is an icy moon, meaning the crater was formed in a mixture of rock and solid ice. The crater is named after the legendary hero from ancient Mesopotamian mythology.
How large is the Gilgamesh impact basin?
Gilgamesh is a massive impact basin with a diameter of roughly 260 to 300 kilometers. It is considered one of the largest and most significant geological features on Ganymede. Its enormous size points to a catastrophic collision early in the moon's history.
What is unique about the central pit in the Gilgamesh crater?
Unlike craters on rocky planets like Mars or Earth, large craters on icy moons like Ganymede often feature a central pit rather than a central peak. The central pit in Gilgamesh is thought to have been caused by the melting and shifting of subsurface ice following the impact. This is a hallmark of crater morphology on icy worlds.
How were images of the Gilgamesh crater obtained?
Detailed images of the Gilgamesh crater were captured by NASA's Galileo spacecraft, which orbited Jupiter from 1995 to 2003. The Galileo mission provided the highest resolution images of Ganymede's surface at the time. Later data from the Juno spacecraft has also provided closer flyby imagery.
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