How do we know the mass of a planet originally appeared on Quora - the knowledge sharing network where compelling questions are answered by people with unique insights.

How do we arrive at a number? The UN Office for the Coordination of Humanitarian Affairs (OCHA) said on Saturday that 11,300 people had been killed and 10,100 were missing in Derna, after the ...

In The Empire Strikes Back, Luke does a one-armed handstand with Yoda balanced on his foot. Using this, I can estimate the mass of Yoda.

Researchers claim to have determined the likelihood that a mass killing will occur following a similar event.