So , did the antimatter fall up ? Scientists have long hypothesized that the Big Bang produced particles of energy . It no longer exists in space , physicists say . It is produced on Earth in particle accelerators . Scientists study it to learn more about the formation of the universe .
Scientists have long hypothesized that the Big Bang produced particles of energy . It no longer exists in space , physicists say . It is produced on Earth in particle accelerators . Scientists study it to learn more about the formation of the universe .