There are two ways that a supernova happens. A Type I supernova occurs when a star accumulates too much matter from nearby stars. Eventually, this leads to a nuclear reaction. A Type II supernova occurs after a star runs out of nuclear fuel and the force of its own gravity becomes too much.
Zambezi River, bordering Zimbabwe and Zambia. Considered the largest waterfall in the world, Victoria Falls thunders obnoxiously in Southern Africa. A Scotsman named David Livingston discovered the falls around 1855 and named them after then-queen Victoria.
Dropping 198ft, Palouse Falls is part of the eponymous park located in the bear-infested state of Washington. The falls received a quick bout of fame after pro kayaker and all-around badass Tyler Bradt set a world record for the largest descent over a waterfall. This drop clocks in at 17ft higher than Niagara.