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Labeled as discuss in The Break Room, started by CraigD, Oct 19, 2020

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  1. CraigD

    CraigD Top Contributor VIP

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    Thanks - some great info there @Sutruk

    Well, here you go then ;)

    A video I found with some nice animation and music giving a rough idea.


    The helical model - our solar system is a vortex

    This is a non-conventional view of our solar system that is different from the standard 'flat' diagrams. We travel, never return to the same spot again.




    The helical model - our Galaxy is a vortex




    The Milky Way
    - The Milky Way itself travels through space at appr. 600 km/s

    Precession cycle
    - One precession cycle takes 25,920 years - Since one revolution takes 226 mln years, this would mean that there are appr. 8692 precessional cycles in one revolution. In this animation there are only 60.

    Scale & distance
    - the Sun is 109 times bigger than the Earth. If this animation was to scale, the planets would be invisible.
    - Our Solar System should be a gazillion times smaller compared to the Milky Way. If this animation was to scale, you could not see the Solar System, the Sun or any of the planets.


    Given the speed that we are moving through the galaxy, and the forces involved, I found myself sitting here clutching my chair while watching this last video ;)
     
    Last edited: Oct 29, 2020
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  2. CraigD

    CraigD Top Contributor VIP

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    Australia's population growth projections have been drastically affected by the Covid-19 impact. With immigration effectively dropping to zero for most of this year, and historic drops in fertility, some estimates predict it will take 8-10 years to recover to the long run average.


    1.4 million less than projected: how coronavirus could hit Australia’s population in the next 20 years

    ...as the pandemic rolls on, attention is also now turning to the impact of COVID-19 on population size, structure and distribution.
    Our new modelling shows that under a worst-case scenario, Australia will be 1.4 million people – or 4% – smaller in 2040, than if COVID-19 had not happened.

    https://theconversation.com/1-4-mil...ralias-population-in-the-next-20-years-143544
     
    Last edited: Oct 29, 2020
  3. CraigD

    CraigD Top Contributor VIP

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  4. CraigD

    CraigD Top Contributor VIP

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    Isaac Asimov was an American writer and professor of biochemistry at Boston University. He was known for his works of science fiction and popular science. [Wikipedia link]

    Many of his predictions have now become true.

    Isaac Asimov on The David Letterman Show 1980
    A very interesting interview!




    Isaac Asimov Predicts the Future (1978)
    [An audio] lecture by Isaac Asimov about his predictions for the future, covering such topics as population growth, the roles of women, energy, war, and space.





    Edited

     
    Last edited: Oct 29, 2020
  5. CraigD

    CraigD Top Contributor VIP

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    The Mandelbrot Set

    This video has been edited together from several documentaries to describe the Mandelbrot set in a simple, introduction/beginner fashion! What is the Mandelbrot set? An incredible mathematical formula explaining fractals and geometry! Several mathematicians and scientists explain this phenomenon in clear detail.





    What's so special about the Mandelbrot Set?


    Featuring Ben Sparks discussing the Mandelbrot Set (and Julia Sets).




    More information:


    https://en.wikipedia.org/wiki/Mandelbrot_set

    https://en.wikipedia.org/wiki/Benoit_Mandelbrot (The mathematician)
     
    Last edited: Oct 29, 2020
  6. CraigD

    CraigD Top Contributor VIP

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    Nuclear Explosion Power Comparison

    We take a look at the size and power of explosions created from a hand grenade to the Tsar Bomba and beyond. Its not just nukes but supervolcano eruptions & meteor impacts as well. It is indeed a terrifying true scale of nuclear weapons.


     
  7. CraigD

    CraigD Top Contributor VIP

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    What If You Detonated a Nuclear Bomb In The Marianas Trench?

    Did you ever wonder what happened if you detonated a nuclear bomb in the Marianas Trench? No? We neither! Let us find out together!


     
  8. CraigD

    CraigD Top Contributor VIP

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    Probability Comparison: Rarest Things in the Universe

    We look at the rarest and most unlikely things and events in the Universe, from the odds of finding a Four Leaf Clover or a Multi-Colour lobster, to the odds of everyone on Earth winning the Powerball and every birth in 2021 is of the same gender! This animated visualization includes a level scale to show the difference in probability with way more detail than previous Comparisons!



     
  9. CraigD

    CraigD Top Contributor VIP

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    Why Are 96,000,000 Black Balls on This Reservoir?

     
  10. Cannuck

    Cannuck 420 friendly VIP

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  11. CraigD

    CraigD Top Contributor VIP

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    Last edited: Oct 30, 2020
  12. koolishman

    koolishman Upgraded Member Blue Account

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    Pristine Extraterrestrial Organic Compounds Discovered in “Fireball” Meteorite

    This meteorite is special because it fell onto a frozen lake and was recovered quickly. It was very pristine. We could see the minerals weren’t much altered and later found that it contained a rich inventory of extraterrestrial organic compounds,” says Philipp Heck, a curator at the Field Museum, associate professor at the University of Chicago, and lead author of the new paper. “These kinds of organic compounds were likely delivered to the early Earth by meteorites and might have contributed to the ingredients of life.”
     
  13. CraigD

    CraigD Top Contributor VIP

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    Thanks @Sutruk

    Here is another in-depth video from PBS Space Time:

    The Andromeda-Milky Way Collision

    The Andromeda galaxy is heading straight toward our own Milky Way. The two galaxies will inevitably collide. Will that be the very last night sky our solar system witnesses?




    Andromeda is racing towards our galaxy - The Milky Way - at 110 km/s, so it will be quite a collision.
     
  14. CraigD

    CraigD Top Contributor VIP

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    Thanks @koolishman

    Although organic compounds make up only a small percentage of the Earth's crust, they are of central importance because all known life is based on organic compounds.
    https://en.wikipedia.org/wiki/Organic_compound
     
    Last edited: Oct 30, 2020
  15. CraigD

    CraigD Top Contributor VIP

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    OSIRIS-REx Stow Success!

    NASA... provides an update on the status of the agency’s Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) spacecraft and the mission’s work to safely stow the sample it collected from asteroid Bennu.

    OSIRIS-REx team members discuss how the stowage process has gone so far, what else they have learned about the sample, and what the next steps are for the mission to return the sample to Earth.


    https://svs.gsfc.nasa.gov/cgi-bin/details.cgi?aid=13754
     
  16. CraigD

    CraigD Top Contributor VIP

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  17. lock

    lock DomainUsed.com VIP

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    Screw this is mental @CraigD Guess what? We are watching all the exact same stuff AGAIN same time. Doesn't matter what subject, documentary, movie music video or news article.. Are we still sharing same ip lol.
     
    Last edited: Oct 30, 2020
  18. CraigD

    CraigD Top Contributor VIP

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    LOL, I think we are getting the same Youtube suggestions.
    :)

    The way the algorithm works, you may find that if you watch all of the above, you may get the exact same suggestions.
     
    Last edited: Oct 30, 2020
  19. lock

    lock DomainUsed.com VIP

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    We have known each other 30 years sold domains to each other lived together with worked with and for each other in various fields. I think we are just tuned in have our periods in sync.
     
  20. lock

    lock DomainUsed.com VIP

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    Last part is funny as @CraigD is most perfect gentlemen I was raised same but also a mouth and a gee up for comedy sake.
     
    Last edited: Oct 30, 2020
  21. CraigD

    CraigD Top Contributor VIP

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    STOL Competition - World Record Shortest Landing 9 Feet 5 Inches

     
    Last edited: Oct 30, 2020
  22. lock

    lock DomainUsed.com VIP

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    Or just fall directly to the ground
    Up up in the sky my beautiful my beautiful inside joke that won't explain lol.
     
  23. CraigD

    CraigD Top Contributor VIP

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    Insane Engineering Of The Saturn F-1 Engine



    ------

    The Rocketdyne F-1 was developed in the late 1950's and used in the Saturn V rocket, and is still the most powerful engine in the world.

    [​IMG]

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    How To Start The Massive F-1 Rocket Engine - Explaining "Ignition Sequence Start"

    Seconds before the launch of a Saturn V we hear the launch commentator calling out 'Ignition Sequence Start'. The ignition sequence is a complicated series of steps which spin the engine up to speed and light the combustion chamber so that the rocket lifts off rather than explodes.

     
    Last edited: Oct 30, 2020
  24. CraigD

    CraigD Top Contributor VIP

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    How Kodak Exposed The Atomic Bomb

     
  25. CraigD

    CraigD Top Contributor VIP

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    Last edited: Oct 30, 2020

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