Advertisement

Brewster Rockit by Tim Rickard for February 19, 2017

  1. Bluedog
    Bilan  over 4 years ago

    I never heard of the Planck length before. Interesting concept. But why does the known laws of physics end there? I would’ve thought it ends at the width of a neutrino.

     •  Reply
  2. Scribble can
    Three Steps Over Japan  over 4 years ago

    Love the science stuff, Dr. Mel. Now, can we put this to practical use and find a way to mass-produce bacon-flavored frosted cereal?

     •  Reply
  3. Sammy on gocomics
    Say What Now‽ Premium Member over 4 years ago

    A sting measures 10 to the minus 33 centimeters long, if you want to consider that.

     •  Reply
  4. Tumblr mbbz3vrusj1qdlmheo1 250
    Night-Gaunt49  over 4 years ago

    What I found a Wikipedia:

    In physics, the Planck length, denoted ℓP, is a unit of length, equal to 1.616229(38)×10−35 metres. It is a base unit in the system of Planck units, developed by physicist Max Planck. The Planck length can be defined from three fundamental physical constants: the speed of light in a vacuum, the Planck constant, and the gravitational constant.

     •  Reply
  5. Missing large
    sherbert  over 4 years ago

    Okay, you savvy Rockiteers…what does Dr. Mel mean by “from our position the universe is smaller than larger” ????

     •  Reply
  6. Avatar3
    brain Les  over 4 years ago

    There is a mistake here, the smallest known item is Brewster’s brain measuring -4.3 to 343 nanogram.

     •  Reply
  7. Avatar 3
    pcolli  over 4 years ago

    As thick as two short Plancks?

     •  Reply
  8. Mr haney
    NeedaChuckle Premium Member over 4 years ago

    I thought the observable universe was 26 Billion light years. Learned something.

     •  Reply
  9. Missing large
    gantech  over 4 years ago

    But is it bigger on the inside?

     •  Reply
  10. Duke
    Rev Phnk Ey  over 4 years ago

    Another mistake — not all neutrinos are yellow.

     •  Reply
  11. Missing large
    corzak  over 4 years ago

    Great chart.

     •  Reply
  12. Missing large
    stamps  over 4 years ago

    So, most of the universe is NOT bigger than a breadbox.

     •  Reply
  13. Cicada avatar
    Dirty Dragon  over 4 years ago

    A bit outdated, but search YouTube for “Powers of Ten”. Always a highlight of my trips to the Science Museum back in the day…

     •  Reply
  14. Missing large
    Astroman007  over 4 years ago

    So, how can the observable universe be 93 billion light years across when the universe is estimated to be 13.8 years old?!

    The farthest objects we can see are closer than 14 billion light years.

    Hope Rickard did more than Google and take the first source— Wikipedia!

    Try these on for size [pun unintentional, but left in!]

    https://futurism.com/how-can-the-diameter-of-the-universe-the-age/

    https://www.quora.com/How-can-it-be-understood-that-the-universe-is-93-billion-light-years-across-and-yet-only-13-8-billion-years-old-1

    In contrast, this tries to explain that it is larger, but arrives at around 45.7 billion light years.

    http://www.pbs.org/wgbh/nova/blogs/physics/2012/10/how-large-is-the-observable-universe/

    This, though, gets us there

    http://www.space.com/24073-how-big-is-the-universe.html

    I feel like Brewster!

     •  Reply
  15. Missing large
    Astroman007  over 4 years ago

    One more thing on this… There seems to be a problem with the definition of “observable”. If the distant galaxy or quasar we see is 12 billion light years away, but has moved much farther away in the meantime, that does not make its current distance (or state) something we are now observing! We are seeing it as it was 12 billion years ago— when it was that far away, not 90 billion light years away.

    “Dr. Mel, paging Dr. Mel!”

    “Pam, do you have something for my headache?!”

     •  Reply
  16. Missing large
    Stephen Gilberg  over 4 years ago

    And the sun is 93 million miles from Earth. Coincidence? :-P

     •  Reply
  17. Spiderman noir revision03 1
    Spiderverse117  over 4 years ago

    If the universe is expanding, does that mean that there is an edge to it? If so what would happen if you passed it?

     •  Reply
  18. Saxon
    Nuliajuk  over 4 years ago

    Is this a logarithmic scale?

     •  Reply
  19. Missing large
    BobCu  over 4 years ago

    An interesting thing about our planet: In this unimaginably vast universe the Earth is equivalent to one grain of sand in the Sahara desert. We are not a big deal.

     •  Reply
Sign in to comment
Advertisement

More From Brewster Rockit

Advertisement
Advertisement
Advertisement