"Something big hits Pluto, and you get Charon, but like with the Earth-moon system, we don't fully know how that works and the conditions under which that occurs," Denton said. "It's a pretty big ...
On TV, we were showing a giant moon rising over the Golden Gate Bridge in San Francisco, and one of them stated it was SO big ...
One idea is that Pluto got its moon system when a massive object smashed into the dwarf planet. The resulting debris then formed into the moons. This hypothesis was nicknamed the “Big Whack.” ...