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Thursday, 23 August, 2001, 10:39 GMT 11:39 UK
Galileo sends new Jupiter moon views
![]() Callisto's surface is heavily cratered
Image: Nasa/JPL/DLR(German Aerospace Centre) Nasa has released close-up pictures of the farthest of Jupiter's four large moons, Callisto.
The pictures were taken by the Galileo probe in May and are the highest resolution view yet seen of any of Jupiter's moons. They show a spiky landscape of bright ice and dark dust with signs of slow but active surface erosion.
There is no clear evidence that Callisto has experienced the volcanic activity or tectonic shifting that have erased some or all of the impact craters on Jupiter's other three large moons, Nasa says. The close-up images show craters as small as about three meters (10 feet) across. Image analysts are counting the craters as a means to estimate Callisto's age and compare their calculations with those for other moons of Jupiter. |
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