As New Horizons hurtles toward its closest approach to Pluto, to take place on Tuesday, NASA released a new image of the dwarf planet on Saturday. The image afforded a closer look at the mysterious dark spots that have been intriguing scientists since New Horizons imaged them just over a week ago. The “spots” have turned out to be more complex than the original image had suggested. The new image shows that Pluto is a complex world whose secrets will continue to cause debate in the scientific community long after New Horizons passes into the Kuiper Belt.
Pluto and Charon: Ice Worlds on the Ragged Edge of the Solar System, 2nd Edition