Pluto, a dwarf planet which was formerly known as the ninth planet in our solar system may have a subsurface ocean owing to its initial warm temperatures, researches posited on Monday.

Pluto may have been a warmer body when it was formed 4.5 billion years ago

NASA's unmanned New Horizons spacecraft is closing in on its historic New Year's flyby target, the most distant world ever studied, a frozen relic of the solar system some four billion miles (6.

NASA's unmanned spaceship closes in on most distant world ever studied

In the letter, she talked about the Kuiper belt also

'Make Pluto a planet again': 6-year-old girl urges NASA

Scientists think that there may have been enough heat-producing elements within Pluto?s rocky core to melt part of the planet?s ice shell

Pluto may have liquid ocean under ice shell

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