John M. Grunsfeld

John M. Grunsfeld

  • Born: 1958-10-10
  • Height:
  • Extended Reading
    • Tess 2022-02-07 14:58:27

      The universe is a typical complex system

      I like to watch this kind of popular science films, because there are fewer people and it is cooler; of course, part of the reason is because of the little girls in middle school in the theater, but mainly because of the complex system that I have been learning. And the universe is about the...

    • Summer 2022-02-07 14:58:27

      beautiful starry sky

      Hubble and Earth
      Gyro Nebula
      Eagle Nebula
      "little mouse"
      Orion's Belt
      Orion Nebula
      Inside the Nebula
      Baby-like "solar system"
      Carina Nebula
      The grandeur of star death
      The Million Planet in the Omega Centaur constellation
      Millions of planets at extreme temperatures The older the planets, the colder and reddish...

    • Amelie 2022-03-21 09:03:20

      Many clips are magnificent and tearful.

    • Reagan 2022-04-20 09:02:41

      I'm going to scrape the wall and look at the stars