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Name: Calvin
Status: student
Grade: 6-8
Country: USA
Date: Winter 2011-2012


Question:
I was wondering what elements scientists have made antimatter out of and/or what elements have scientists observed made out of antimatter.I have heard that it is extremely expensive to make antimatter (approximately $250 million would produce 10 milligrams of the stuff).

Replies:
Antihydrogen has been produced around 2005. The following web site has information on the production of antihydrogen:

http://cool-antihydrogen.web.cern.ch/cool-antihydrogen/Experiments/Experiments-en.html

---Nathan A. Unterman


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