ALPHA experiment makes rapid advances in demystifying antimatter. Antihydrogen – an atomic bound state of a positron and antiproton – was first produced at CERN towards the end of 1995. Over the past two years, physicists working on the ALPHA experiment have advanced our understanding of antimatter by becoming the first to capture and store anti-atoms for long enough to examine them in detail. The researchers trapped a total of 38 antihydrogen atoms for about one-fifth of a second in 2009 and then perfected their apparatus and technique to trap a total of 309 antihydrogen atoms for 1000 s in 2010. Now, the same team is the first to show that it is possible to probe the internal structure of an antihydrogen atom, reporting the first tentative measurement of the antihydrogen spectrum.