凡人号太空船
2019 August 18 Human as Spaceship Space Image Credit: NASA, ESA, Hubble, and J. Maiz- Apellániz (IAA); Acknowledgement: D. De Martin; Human Image Copyright: Charis Tsevis; Composition: R. J. Nemiroff Explanation: You are a spaceship soaring through the universe. So is your dog. We all carry with us trillions of microorganisms as we go through life. These mul...