It's a sad day for fans of space travel. The newest Cosmos ship was lost shortly after launch. I don't know yet if that m,eans it blew up, or just went missing, or what, but I'm disappointed. The Cosmos is, or was, a light-sail spacecraft, which science-fiction fans can tell you means that it deploys a giganticly, very thin sail almost like an umbrella whcih it uses to catch light-rays for propulsion. I don't know the science that well anymore, but I believe it somehow uses the photons that are hitting over such a wide area as a propellant, just like a ocean-bound sailing ship uses a sail to catch wind. Theoretically this means almost unlimited speed, as it can continue accelerating forever, even in depths of interstellar space. I think that's the theory, anyway. Hopefully they'll track the ship down. I was especially interested in this launch because it's a private group doing it, and it only cost $4 million. That's cheap enough that they can try again if this one is lost. I hope they, or someone else, will soon.