Behold the first geological map of Ganymede, Jupiter’s largest moon
by Lauren Davis
Four hundred years ago, Galileo Galilei observed Ganymede in orbit around Jupiter. This week, a team of planetary scientists unveiled the first global geological map of our solar system’s largest moon.
Using images obtained by NASA’s Voyager 1 and 2 spacecraft and the Galileo orbiter, a team led by Geoffrey Collins of Wheaton College pieced together a mosaic image of the planet, giving us our first complete image of the geological features of the satellite. Above, you can see the moon centered at 200 west longitude. The darker areas represent the very old and heavily cratered region of Ganymede, while the lighter areas are somewhat younger regions marked with grooves and ridges…
the reed flute (or karst) cave in guilin, southern china, was carved out of the karst limestone mountains over 180 million years ago from an underground river that has now settled into a lake. more than 70 ink inscriptions dating back to 792 ce can also be found inside the cave, which was left forgotten for a thousand years before being rediscovered in the 1940s by a group of refugees fleeing japanese troops. photos by james p. nelson, christianortiz, jesse estes, adam allegro, filip m.a.
A couple of new experiments. The one on the right is ink on top of metal leaf; pretty excited about how cool that will look eventually. The other is a bunch of peeling layers of wallpaper, which was my original concept for the wallpaper Colonization pieces (little worlds spreading on stained/old walls).