New research provides some clues about our solar system's most mysterious planet.
Given time, solid objects can actually flow
Despite a recent glitch, LightSail 2 is still aiming for a historic flight in 2017
Here's the whole collection
Like Wallace and Gromit's trip to the moon, but with more science, less cheese
The dwarf planet may have a hydrological cycle, but it's not like ours
It just keeps getting better
The latest and greatest images from the New Horizons mission
Pluto is just the beginning
Like science, tech, and DIY projects?
Sign up to receive Popular Science's emails and get the highlights.