11 comments

  1. blooms horan blooms horan

    Indian astronomers knew this long back… But why would you glorify them would be an insult to you "civilized" white folks.. Anyway who cares theres always going to be enough bias… Knowledge wise a great video though.

    first
  2. broncosteviep1 broncosteviep1

    Phil, if space is expanding and galaxies are red shifted and going away from us, then how is the Milky Way going to collide with Andromeda?

    second
  3. Hunter6213 Hunter6213

    Can someone tell me what is light-second?

    third
  4. Anubhav Yadav Anubhav Yadav

    awesome…you have incited a little astronomer inside me by explaining how parallax and spectroscopy are combined

    4th
  5. Tom K Tom K

    How did we know distance to jupiter without knowing distance to sun? And how did measuring distance to venus, give distance to sun?

    5th
  6. via Saliha via Saliha

    i get chills almost every time i watch this series bc DAMN the universe is so big and beautiful and just wow

    6th
  7. J.A.H. van de Laak J.A.H. van de Laak

    Excellent

    7th
  8. John nyboy John nyboy

    Great videos. You, Sir….excellent, I wish my physics teacher was as informative and interesting to listen to.

    8th
  9. timcritt timcritt

    Fear and Loathing….

    9th
  10. Lissysosweet95 Lissysosweet95

    I have a question:
    What are the three methods I can use to measure cosmological distances?

    10th
  11. Shubham Sharma Shubham Sharma

    Thanks Phil for this amazing piece of educational art. Science is a way of thinking and your work ignites this fire. #ScienceFood

    11th

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