Pluto Heart Suggests Dwarf Planet Has Underground Liquid Water Ocean Pluto's heart-shaped region hints that a subsurface ocean exists on the dwarf planet. Simulations of an asteroid impact suggest this body of liquid water is at least 60 miles deep. by Rhodi Lee
Science Mysterious Snail-Like Object Spotted On High-Res Photo Of Pluto: What Could It Be? by Alyssa Navarro
Science Cosmic Romance: Pluto Offers Its 'Heart' To New Horizons Ahead Of Historic Flyby by James Maynard