LIQUID NITROGEN ON PLUTO
In 2015, NASA's New Horizons flew past Pluto and captured detailed images of its frozen surface. More than a decade later, scientists revisited the images and found evidence that liquid nitrogen may have once flowed across the dwarf planet
Pluto may have liquid ocean under ice shell: study
Mangalyaan searching for Earth 2.0! 'Methane discovery' to give alien-seekers heart
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