Pluto's surface once had frozen glaciers of nitrogen: Study
Pluto's surface once had frozen glaciers of nitrogen that were formed and disappeared in the early stages of Pluto's history, according to a study. The researchers at SETI institute used imagery from NASA's spacecraft New Horizons. Rapidly changing weather on Pluto turned the ice into gas, leading to formation of landscapes termed as 'washboard' and 'fluted' terrains.