Scientists now believe that Pluto may have had a 'hot start' and has always had a subsurface ocean.
The existence of algae high up in the Andes Mountains hints at the possibility of life on distant, icy worlds.
The enigmatic dwarf planet has been throwing up no shortage of surprises over the last few years.
Following on from its historic flyby of Pluto in 2015, the probe will reach its next destination on New Year's Day.
Researchers have called into question the reasoning behind Pluto's demotion from planet to dwarf planet.
Following its visit to Pluto back in 2015, the spacecraft has been on its way to Kuiper belt object MU69.
NASA is launching a spacecraft to study the heliosphere - a bubble which extends far beyond the orbit of Pluto.
The enigmatic dwarf planet is home to a 'riot of processes' that continue to surprise researchers.
The footage has been constructed from the thousands of photographs taken by the New Horizons probe.
Following its groundbreaking flyby of Pluto, the probe is now on its way to another Kuiper Belt object.
The discovery marks the first time this phenomenon has been observed anywhere other than on the Earth.
It is looking increasingly likely that the dwarf planet is home to a vast subterranean ocean of water.
Scientists have spotted X-rays trickling from the dwarf planet despite there being no obvious source.
This tiny, distant world is believed to take up to 1,140 years to complete a single orbit of the Sun.
Scientists believe that the dwarf planet's interior may be filled with large quantities of liquid water.
NASA is celebrating the success of its New Horizons spacecraft by showcasing a new sequence of images.
The fascinating pictures are the most detailed views of Pluto we are going to get for a very long time.
Despite being comparable in size to Pluto and Eris, this enigmatic world has yet to even be given a name.
The discovery of what look like clouds on Pluto has reignited the debate over its dwarf planet status.
New images from the New Horizons probe suggest that Charon once had a sub-surface ocean of liquid water.