And finally tonight, more from the Cosmos. New research is revealing the secrets of

I. O. the mysterious volcanic moon of Jupiter. Four centuries after Galileo discovered

I.O. in 1610, NASA sent a first of its kind solar-powered

spacecraft called Juno on a five-year 1.7 billion-mile journey to Jupiter and its

moons to see what it could discover

with a color camera called Juno CAM. Last week NASA released animated artist

conceptions of I. OIL based on data Juno collected during two flybys.

Juno's teams of scientists nicknamed this towering sharp peak feature Steeple Mountain.

It's estimated to be as tall as 4.3 miles.

By comparison, Mount Everest is just under 5.5 miles.

This 127 mile long lake is called Lokee Potera. It's filled with cooling magma and rimmed by hot

lava. There are islands in the center. The reflections Juno Cam captured suggest that

part of IOS surface is as smooth as glass like the volcanic

rock obsidian.

Eruptions from Iow's hundreds of volcanoes illustrate why some call it the tortured moon. It's relentlessly squeezed by Jupiter's

tidal forces creating tremendous heat, melting rock and contributing to its

status as the solar system's most volcanically active site.