Where is the rest of the circle? Jupiter [
http://www.seds.org…]'s largest moon Ganymede [
http://bang.lanl.go…] has some truly unusual terrain, including the pictured half circle above [
http://galileo.ivv.…] cut by nearly parallel curves. Full circles can be easily explained by impact craters [
http://antwrp.gsfc.…], but partial circles imply that some resurfacing [
http://galileo.ivv.…] has occurred since the original impact. The diameter of the half circle is about 32 kilometers. Also of interest is a dense linear crater chain [
http://antwrp.gsfc.…] that cuts across the top of the half-circle. Mysteries like these are typically solved by the hard work of reconstructing a sequence of natural occurrences, which in this case may yield a better understanding of Ganymede [
http://galileo.ivv.…]'s interesting past.
Explanation
Where is the rest of the circle? Jupiter [
http://www.seds.org…]'s largest moon Ganymede [
http://bang.lanl.go…] has some truly unusual terrain, including the pictured half circle above [
http://galileo.ivv.…] cut by nearly parallel curves. Full circles can be easily explained by impact craters [
http://antwrp.gsfc.…], but partial circles imply that some resurfacing [
http://galileo.ivv.…] has occurred since the original impact. The diameter of the half circle is about 32 kilometers. Also of interest is a dense linear crater chain [
http://antwrp.gsfc.…] that cuts across the top of the half-circle. Mysteries like these are typically solved by the hard work of reconstructing a sequence of natural occurrences, which in this case may yield a better understanding of Ganymede [
http://galileo.ivv.…]'s interesting past.
Explanation
