Pluto and other known “not-planets” in our solar system mapped in scale image montage

“Their non-planetary status is a handicap because these are the worlds that we need to get Earthlings excited about exploring.”

Close-up images of Charon, Pluto's mysterious moon

A cold and distant place, imaged for the first time from a distance seemingly within reach. Read the rest

Pluto of the day

Now with distinct surface features! [NASA] Read the rest

Watch: NASA celebrates 50 years of planetary science awesomeness

On July 14, 2015, New Horizons will take the first close-up pictures of Pluto, exactly 50 years to the day after Mariner 4 flew by Mars and took the first close-up pictures ever of another planet. Read the rest