NASA bombshell: How ‘new world' size of Pluto left space agency stumped | 7/17/2019 | Callum Hoare
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“It goes around once every 248 years.

“Secondly it has to be massive enough for gravity to sculpt it almost into a sphere, and Pluto indeed is almost spherical.

Orbit - Sun - Mass - Constraint

“But thirdly, it has to clear its own orbit around the Sun, and that’s essentially a mass constraint as well. It has to...
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