In Montana, where Sen. William Andrews Clark made his fortune and lost his reputation, people had assumed that all his children were long dead. After all, he was born in 1839 and was of age to serve in the Civil War.
The usual metric for whether a planet is habitable or not is to ascertain whether liquid water could exist on its surface. Most worlds will either be too cold, too hot or of a type (like Jupiter) that may have no solid surface and be swaddled in noxious gases.
I always say that the real success of Wine Library wasn't due to the videos I posted, but to the hours I spent talking to people online afterward, making connections and building relationships.
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