The new research, which shows that elusive antimatter falls downward toward the Earth rather than levitating, proves Albert Einstein right yet again.
On Sept. 27, an international team of physicists reported a major finding about an elusive form of matter known as antimatter. It appears that antimatter responds to gravity the same way regular matter does, validating theories proposed by Albert Einstein more than a century ago.
Furthermore, close to three decades after antihydrogen was first created in a lab, today's scientific triumph is yet another confirmation of Einstein's general theory of relativity, which predicts that all masses, irrespective of differences in their internal structures, react to gravity in a similar manner.
"This gives us a powerful experimental knob that allows us, basically, to believe the experiment actually worked because we can prove to ourselves that we can control the experiment in a predictable manner," Joel Fajans, a physics professor at UC Berkeley and a co-author of the new study, said in the statement.
However, though the latest findings rule out theories that posit antimatter is repelled by gravity, only more precise measurements will tell if there is any difference in the gravitational force on antimatter compared to matter. During the Big Bang, the universe is believed to have been rich with pairs of matter and antimatter particles, with the latter considered matter's mirror as its particles sport the same mass except for an opposite electrical charge. If matter and antimatter particles come into contact, they wipe out each other in a violent flash that leaves behind pure energy, so matter and antimatter particles are always created and destroyed in pairs.
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