Here’s What We Learned About Pluto Today

Three days after New Horizons‘ flight through the Pluto system and the data is coming in fast and furious (albeit quite highly compressed!), giving scientists a virtual “toy box” of new findings to make about these distant worlds’ exotic nature. On Wednesday we got our first looks at Pluto’s 11,000-foot-high mountains, now informally named Norgay…

A Salty Tail

Sometimes the line between “planet” and “comet” can get a little blurry…especially in Mercury’s case! This video, taken by NASA’s two-piece STEREO (Solar Terrestrial RElations Observatory) spacecraft – consisting of one unit orbiting the Sun just ahead of the Earth and another behind – shows Mercury over a four-day period, shining brightly in the solar…