Researchers have long thought that Pluto began as an icy sphere when it formed in the Kuiper Belt, a home to cold, dark objects on the edge of our solar system. New research suggests that Pluto actually started out in a hot formation scenario.
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.
Researchers have long thought that Pluto began as an icy sphere when it formed in the Kuiper Belt, a home to cold, dark objects on the edge of our solar system. Some scientists also believe there is a liquid ocean beneath Pluto's ice shell that is estimated to be 249 miles thick. But they thought it formed later in Pluto's history as radioactive elements were heated near the dwarf planet's rocky core and decayed.
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