Scientists get closer to solving mystery of antimatter
By Pallab Ghosh (BBC) Science correspondent Scientists have made a key discovery about antimatter - a mysterious substance which was plentiful when the Universe began. Antimatter is the opposite of matter, from which stars and planets are made. Both were created in equal amounts in the Big Bang which formed our Universe. While matter is everywhere, though, its opposite is now fiendishly hard to find. The latest study has discovered the two respond to gravity in the same way. For years, physicists have been scrambling to discover their differences and similarities, to explain how the Universe arose. Discovering that antimatter rose in response to gravity, instead of falling would have blown apart what we know about physics. They've now confirmed for the first time that atoms of antimatter fall downwards. But far from being a scientific dead end this opens the doors to new experiments and theories. Does it fall at the same speed, for example? During the Big Bang, matter a