CHINA FAKING SPACE

Three Chinese astronauts aboard the nation's space station are getting ready to teach their first science class from space . Hello there. You're watching the world today . Coming to you live from Beijing. . I'm Zang. Chinese astronauts will be giving a lecture to young students on Earth this afternoon from the nation space station . So I have a pingpong ball. I put it into the glass of water . Can you see that the ping pong ball actually not really coming back to the surface, right? It's inside the water . So that phenomena quite different from what you have there on earth because that buoyant force actually seems disappear because there's no gravity here . So we talk about that there seems like no buoyancy . I'm Don Pett. I'm a NASA astronaut . I've flown three times to the International Space Station and spent over a year living there . I do not believe you that you can get a great cup of coffee inside the International Space Station . Okay. Most of the time you are absolutely correct . The standard cup will not work in a weightless environment . You know, the cup that we're all used to drinking . Wait, I have a stunt cup right here . Oh, this yeah a standard cup like this does not work in a weightless environment. It requires gravity to hold the fluid in the bottom of the cup and it requires gravity to allow the fluid to flow out when you want to take a sip . A standard cup like this does not work in a weightless environment . It requires gravity to hold the fluid in the bottom of the cup . It requires gravity to hold the fluid in the bottom of the cup . It requires gravity to hold the fluid in the bottom of the cup . And it requires gravity to allow the fluid to flow out