Decorate your home with custom drink coasters! Simple, yet substantial, these
coasters will look great in any room in your house. Made to keep your tables
scratch-free, our custom sandstone coasters have a cork backing, so you can use
them on any surface. These coasters have a matte finish and work best with
vintage illustrations, black-and-white photos and personal text messages.
Like the downtown area of your favorite city, the roads you drive to your job on, and any self-respecting mechanized artificial intelligence enabled war machine... Io's surface is constantly under construction. This moon of Jupiter holds the distinction of being the Solar System's most volcanically active body -- its bizarre looking surface continuously formed and reformed by lava flows. Generated using 1996 data from NASA's Galileo spacecraft, this high resolution composite image is centered on the side of Io that always faces away from Jupiter. It has been enhanced to emphasize Io's surface brightness and color variations. The notable absence of impact craters suggests that the entire surface is covered with new volcanic deposits much more rapidly than craters are created. What drives this volcanic powerhouse? A likely energy source is the changing gravitational tides caused by Jupiter and the other Galilean moons as Io orbits the massive gas giant planet. Heating Io's interior, the pumping tides would generate the sulfurous volcanic activity. And now you can set your drink on it.