The Comet Swift Tuttle, Will It End All Forms of Life on Earth?

There is anecdotal evidence that something mabe round. We have never actually seen one or captured one. Even the indian army had put out a tweat with the photographs of some mysterious footprints that are clearly not human. It's also possible that some species of animals that have been declared extinct may still exist. Will the comet swift tuttle, which is heading on a collision course with the earth on seventeenth august, two thousand 116, end most forms of life on earth? Is it true that the collision will be very more powerful than the explosion of a million nuclear bombs put together?