In all the time since it was an discovered, only 7 trillionths of a gram of anti-matter had been manufactured at CERN. All the antimatter ever made in labs and particle accelerators in the world would be enough to light an electric light bulb for a few minutes. Not exactly making a trip to Proxima Centauri feasible is it? We probably won't be visiting nearby star systems until the 2500s or the 3000s.
Antimatter and Space Travel
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We will be traveling the Universe far sooner than the predicted timeline of the self-proclaimed experts and Star Trek debunkers (!!!). That's my counter-prediction. Time will tell who's right.
https://www.msn.com/en-us/news/technology/exploring-the-potential-of-antimatter-as-the-key-to-interstellar-exploration/ar-BB1iKmU7?cvid=d6caf17ab41a4164bdb576910b491ddc&ocid=winp2fptaskbar&ei=29&sc=shoreline