radial

23 photos tagged radial, from 3 members of Flickr Commons.

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6
1939
2011

 

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Sirius A and B: A Double-Star System in the Constellation Canis Major

from Smithsonian Institution

  • 1 older comment, and then…
  • biotron said:
    'Dogon' brilliant
  • waro2006 said:
    It is very disappointing to find, that for at least 70 years a substantial number of Astronomical scholars during that period time in our history, were aware that a North African tribe of people known as the Dogon, carried with them precise astronomical details, not only about the star system of Sirius, but also details of the Earths planetary system, and yet these scholars had made no attempt to publicly acknowledge this fact. These wonderful people had retained this accurate astronomical data For at least 3000 years, and yet none of these details were ever seriously debated by the astronomical societies. These Dogon people were aware of the elliptical orbits of our planets; the moons around Saturn etc, long before Kepler and every other famous scientist were born. For thousands of years the Dogon had named the Neutron star, that orbits the star Sirius, “Digitaria.” One would have thought during some part of our history, as a mark of respect, the astronomical hierarchy would have suggested that the name of this neutron star be changed from Sirius “B” To “Digitaria”. The fact that none of these emeritus scholars made any attempt to do this, speaks volumes about the flaws in their sense of justice. There is no excuse why this long over due name “change” can not now go ahead. I would be very interested to learn how many other people in this forum agree with this suggestion? WARO
  • biotron said:
    The story is indeed fascinating. No doubt various ancient civilisations possessed incredibly "advanced" astronomical knowledge based on countless patient centuries of observation. I'd be interested to know what other people in this forum think of the following pages: www.philipcoppens.com/dogonshame.html www.ramtops.co.uk/dogon.html
  • lyrical wing said:
    Thanks for the picture.. its brilliant...
  • duiceburger said:
    Hi, I'm an admin for a group called NASA - Public Domain, and we'd love to have this added to the group!

Women are trained to do precise and vital engine installation detail in Douglas Aircraft Company plants, Long Beach, Calif. (LOC)

from The Library of Congress

  • 111 older comments, and then…
  • ronjon=supergenius said:
    Rosie the Riveter has nothing on this woman! She looks pretty tough!
  • Descriptive Bottle said:
    I am so inspired by what these women did!
  • treebythesea said:
    That is so awesome! I feel like more of that should be going on today.
  • hallowed ink said:
    I love the look on her face...
  • Elaine said:
    This title may as well say Women "can be" trained! It's so subtly of its era.

Aviation cadets in training at the Naval Air Base, Corpus Christi, Texas (LOC)

from The Library of Congress

  • Szmytke said:
    A Vought-Sikorsky Kingfisher, given the date most likely an OS2U-3 . Powered by a Pratt and Whitney R985 AN-2 Wasp Jnr radial piston engine. Max speed 164mph, cruising 115mph service ceiling 13,000ft range 805miles. One fixed forward firing 0.30in and one rear firing 0.30in plus two 100lb or 325lb bombs on underwing racks.
  • Chris Henry said:
    Hi, I'm an admin for a group called IRON WORKS PHOTOGRAPHY, and we'd love to have this added to the group!