At least so far, scientists have been unable to interpret the very earliest events in the explosion, occupying the first 10-43 seconds (one tenth of a millionth of a millionth of a millionth of a millionth of a millionth of a millionth of a millionth of a second!). After that, it is possible to make predictions about the events that would need to have occurred to result in today’s observable universe, including the annihilation of matter and antimatter, the formation of stable atomic nuclei, and ultimately the formation of atoms, primarily hydrogen, deuterium, and helium.
