This news article highlights this upcoming event, but it started out all wrong.
Scientists believe anti-matter exists, and they said the alpha magnetic spectrometerhas been packed away in the space shuttle Endeavour in search for it.
Er... hello? We don't just believe that anti-matter exists. We KNOW they do, or else the Tevatron has been colliding imaginary particles, and PET scans is based on hypothetical ideas.
Providing evidence for the existence of antimatter is NOT what the AMS is for. It is a lot more subtle than that. The AMS webpage (link given earlier in this blog entry) should tell you what it is for. News article like this does a disservice because it makes it sound as if antimatter is still something unverified, and that "scientists" merely "believe" in its existence.