Something very strange is happening at Pluto

"Something very strange is going on around Pluto. The icy world that sits some 3.6 billion miles from the sun appears to be emitting x-rays—high energy radiation associated with gases with temperatures of a million degrees. That makes Pluto the furthest known x-ray source in our solar system. If confirmed, the finding could reshape our understanding of the dwarf planet’s atmosphere."

http://gizmodo.com/pluto-is-emitting-x-rays-and-thats-really-weird-1786709072