Quote:
Originally Posted by 3 Justin 3
I don't understand what anti-matter is. What is the difference between an hydrogen atom and a anti-hydrogen atom (what they captured)?
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An anti-hydrogen atom is made of the antimatter counterparts of the normal components of a hydrogen atom.
While hydrogen has one electron and one proton, anti-hydrogen has a positron and an anti-proton.
Antiparticles like the positron and anti-proton are part of the Standard Model of particle physics, most particles have an antimatter equivalent that has the same mass and spin, but have the opposite charge.
And when matter and antimatter meet, they annihilate, producing other particles (photons, forms of radiation, etc).