Showing posts with label Constellations. Show all posts
Showing posts with label Constellations. Show all posts

Tuesday, March 8, 2011

Constellations - Part II - The Little Dipper

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Ursa Minor is the “Little Bear” or “Son of the Mother Bear" – Ursa Major.  It is made up of 7 stars just like its larger counterpart.
  • Polaris (North Star)
  • Kochab
  • Pherkad
  • Yildun
  • Ahfa al Farkadain
  • Anwar al Farkadain

·   OTHER INTERESTING FACTS:
**In earlier times, the Little Dipper was named “Dragon’s Wing” as it was thought of as part the constellation, “Draco”. 
**Both the big and little dippers are found in the Northern Sky, near the pole.
**You can only see them clearly if you are in the Northern Hemisphere.
**The North Star is as bright as the seven stars in the Big Dipper (the rest are fainter).
**A dwarf galaxy named “Ursa Minor Dwarf” is located in the same area as The Little Dipper.
**One of the stars within the constellation has its own extrasolar planet (planet outside of solar system)
**Constellations that border Ursa Minor are: Draco, Camelopardalis and Cepheus.


Thursday, February 3, 2011

Constellations - Part I - The Big Dipper

When I was younger, I spent a lot of my childhood summers at our trailer in Ipperwash. I think it was my Uncle Gary who bought me a book, geared towards children, to help identify constellations. It was cool because the pages had glow in the dark stars of constellations so you could use it outside at night. Since then I've been able to find the Big Dipper, but wanted to learn more about them and more. Here is some info about The Big Dipper that I found interesting (and didn't have previous knowledge of): 

  • The names of the seven stars that make up "The Big Dipper" are : Dubhe, Merak, Phecda, Megrez, Alioth, Mizar & Alkaid
  • Mizor (the middle star of the handle) is in the same line of sight as another star called Alcor, so if you look close enough, it looks like a "double star" that has been named "the horse and the rider"
  • In 50,000 years or so, the Big Dipper will not look the same. The stars alignment will have shifted and be completely different. There will still be a handle, but the trapezoid will look different. 
  • If you use the furthest side of the dipper, and draw an imaginary line from the bottom to the top and keep extending it, it points directly at the North Star
  • Tolkien's Middle-earth mythos refers to the Big Dipper as "Valacirca" (Sickle of the Valar) - a sign of hope signifying doom for evil.
  • The Big Dipper and North Star are on Alaska's State flag
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