But tachyons are by definitions just “hypothetical particles moving faster than light”. Meaning if they exist, of course they move faster than light. I don’t know which lab your talking about, but people are absolutely right to think that tachyons are faster than light (if they believe tachyons to exist, which of course never has been proven).

Maybe you have the wrong word here and that people think that neutrinos can move faster than light, since there was a false measurement in CERN? But that one has been reported and updated already.

Sg1 will probably be one of my favourite series ever. But from my perspective it really didn’t age that well. Not talking about graphics or CGI here, but more on a action POV. A few jokes I probably wouldn’t bring today anymore, a few weird decisions regarding the plot and the cast and, because of the episodic character of the show quite a few plot holes. SGA on the other hand is a great show, which aged just as well and is the one I actually recommend people nowadays if they want to take a look at the franchise.