The Frosty Secret of Pluto's Heart For years, astronomers have been intrigued by the Sputnik Planitia, a heart shaped glacier on Pluto with unusual surface patterns.
A new study published in The Planetary Science Journal suggests these patterns may not be solely due to ancient liquid flows but could indicate recent activity: the presence of liquid nitrogen on Pluto's surface.
The discovery raises more questions than answers. Liquid nitrogen is just one mystery among many surrounding Pluto's environment.