And the Chinese have an idea to saving us. 2029 is projected the year a massive asteroid - Apophis - will pass close to the Earth. Close enough to scare some very serious people, astronomers. It will, because life is funny this way, enter what is called a keyhole and come for another close pass in 2036. Or it will hit us. The good news is if it hits us in 2029, we don’t have to worry about 2036. Whatever happened to Halley’s Comet? Now there’s something you can set your watch by.