Sackler-Astronomy-Lecture-The-Search-for-Planet-Nine

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Recent evidence suggests that a massive body is lurking at the outskirts of our solar system, far beyond the orbits of the known giant planets. This object, at a distance approximately 20 times further than Neptune and with a mass approximately 5000 times larger than Pluto, is the real ninth plan... More

2017-03-01

Added Mar 1, 2017  

Channel Education

Duration 76:45   |   views 18202


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