Sleipnir Fossa on Pluto
A strange geologic feature has been noted from the spectacular images obtained by the New Horizons during it's historic fly by on July 14, 2015. This long fracture over the southern hemisphere of Pluto (western border of Tartaus Dorsa) measures 360 miles (580 km) in length and has been informally named Sleipnir Fossa (in Norse mythology the eight-legged horse of Odin (king of the Norse gods)). The strange thing about this Plutonian fracture is that it intersects at a central nexus with five other smaller fractures - instead of being parallel to each other as other fractures over Pluto. This "spider fracture pattern" is believed to have produced at a fractured point of stress with material coming up from below to the surface. Oliver White (NASA Ames Research Center and a member of the New Horizons Geology Team) states that "The patterns these fractures form are like nothing else we've seen in the outer solar system, and shows once again that anywhere we look on Pluto, we see something different." These fractures resemble radially fractured centers called novae on Venus and Pantheon Fossae on Mercury.