How anti-matter is not anything like dark matter.

I always sort of assumed that the galaxy far, far away (though, to be fair, all galaxies except the Milky Way are “far, far away”) was one of those theoretical galaxies made primarily out of anti-matter. Of course, if you lived in an anti-matter galaxy, you’d simply think of it as matter. To [...]

Why Fusion Power Isn’t Happening

In 1961, Kennedy said, “Hey, Russia. We saw your Sputnik, and that was cool. But hey, guess what? We’re going to put a dude on the moon. That’s right. That moon.”
And we did. In 1969, Neil Armstrong ambulated in a way that was at once small and giant, once [...]