After becoming the first humans to fly over the Earth's poles in space, a crew of private astronauts — or space tourists — report that the world's southernmost continent is indeed a vast expanse of snow and ice. "Hello, Antarctica," tweeted Chun Wang, the crypto-entrepreneur who financed and led the private space mission, Fram2. "Unlike previously anticipated, from 460 km above, it is only pure white, no human activity is visible." As seen in a video Wang uploaded, it's a breathtaking scene, even if a lot of it is obscured by a swirling blanket of clouds. No humans have ever […]