Today, the dwarf planet Pluto orbits the sun from the edge of our solar system and its surface temperature is an inhospitable negative 378 to negative 396 degrees Fahrenheit.
But a new study suggests that wasn't always the case.
Katie Johnston reports.
New research published in the journal Nature Geoscience suggests Pluto started out with a liquid ocean that has been slowly..
It was previously thought that Pluto started off as a ball of ice, eventually forming a subsurface ocean later on, but new research..