description Valhalla (Callisto) Overview
Valhalla is a substantial impact basin located on Jupiter’s moon Callisto. Its defining feature is a prominent ring system stretching over 1,900 kilometers, making it one of the largest impact basins recognized within our solar system. Scientists study Valhalla to understand ancient processes of planetary formation and the effects of large-scale impacts on icy bodies like Callisto. This crater provides valuable data for researching Jupiter’s outer moons.
help Valhalla (Callisto) FAQ
Which planet's moon features the Valhalla impact basin?
The Valhalla impact basin is located on Callisto, which is the second-largest moon of Jupiter. Callisto is heavily cratered, but Valhalla stands out as its most prominent geological feature.
What is the physical structure of the Valhalla basin?
Valhalla is an immense multi-ring impact basin. It features a central bright plain surrounded by up to 15 concentric rings extending outward, created by the shockwave of the ancient impact fracturing the moon's icy crust.
How large is the Valhalla crater?
The central bright spot of Valhalla is roughly 360 kilometers wide, but the outer ring system stretches over 1,900 kilometers across. This makes it one of the largest impact features in the entire solar system.
Which NASA spacecraft first imaged Valhalla?
The Valhalla basin was first closely observed by the twin Voyager spacecraft in 1979. Later, the Galileo orbiter provided much higher-resolution images of Callisto's surface in the 1990s, revealing the intricate details of Valhalla's rings.
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