Stars of a Summer's Triangle

Stars of a Summer's Triangle
http://apod.nasa.gov/apod/ap150627.html

Explanation: Rising at the start of a northern summer's night, these
three bright stars form the familiar asterism known as the Summer
Triangle. Altair, Deneb, and Vega are the alpha stars of their
respective constellations, Aquila, Cygnus, and Lyra, nestled near the
Milky Way. Close in apparent brightness the three do look similar in
these telescopic portraits, but all have their own stellar stories.
Their similar appearance hides the fact that the Summer Triangle
stars actually span a large range in intrinsic luminosity and
distance. A main sequence dwarf star, Altair is some 10 times
brighter than the Sun and 17 light-years away, while Vega, also a
hydrogen-fusing dwarf, is around 30 times brighter than the Sun and
lies 25 light-years away. Supergiant Deneb, at about 54,000 times the
solar luminosity, lies some 1,400 light-years distant. Of course,
with a whitish blue hue, the stars of the Summer Triangle are all
hotter than the Sun.

On Sunday, June 28, 2015 at 2:50:24 AM UTC+1, Sam Wormley wrote:
Stars of a Summer's Triangle
http://apod.nasa.gov/apod/ap150627.html

Explanation: Rising at the start of a northern summer's night....


It takes literally nothing to drop the apparent daily motion of the stars from horizon to horizon and shift to the real relevance of the apparent motion of the stars in sequence behind the Sun as a consequence of the orbital motion of the Earth. Even without dedicated graphics the perspective is so accessible to the observer from the surface of the Earth and how it translates into the annual motion of the Earth -

https://www.youtube.com/watch?v=MdFrE7hWj0A

https://www.youtube.com/watch?v=eeQwYrfmvoQ


The daily trek of the constellations across the observers view is an old one however there is a new perspective which puts the apparent motion of the stars to better use by watching where they are located at twilight when the Sun has disappeared from view , it is this change in position of the stars and this change alone which grants the observer a more productive and creative appreciation of astronomy.

The option of doing nothing in dealing with this intellectual crisis was and is never on the table no matter how many people here believe that trying to destroy the most basic fact known to our species where planetary dynamics merge with terrestrial sciences is front an center.

To witness people stand by and do nothing as the idea is promoted that rotations and 24 hour days fall out of step across an orbital period can be a dismaying sight however this merely amounts to people willing to insult themselves,their ability to reason, their intelligence,their imagination and all those things which move humanity forward.

I read a reaction in another post of an old guy unable to adapt to the principles where the 24 hour day emerges from the parent observation that the Earth turns 1461 times across 4 annual circuits which naturally reduces to 365 1/4 days per circuit and this is intellectual bankruptcy in an language and in any era.