Trivia: What are these the names of?

What are these the names of?

• Norma
• Orion
• Perseus
• Cygnus

There are two answers, one commonplace (ie one that I knew), and one quite a bit more obscure. I'm looking for the obscure one...

Comments

• Anonymous
  August 19, 2005
  Not sure if this is obscure enough, but the name of our galaxy's arms?
  
  http://en.wikipedia.org/wiki/Perseus_Arm
  http://en.wikipedia.org/wiki/Orion_Arm
  http://en.wikipedia.org/wiki/Cygnus_Arm
  http://en.wikipedia.org/wiki/Norma_Arm
  
  Versus the more common constellation names:
  
  http://en.wikipedia.org/wiki/Norma_%28constellation%29
  http://en.wikipedia.org/wiki/Perseus_%28constellation%29
  etc...
  
  
• Anonymous
  August 19, 2005
  Those are the pen names I use when writing op-ed pieces for Redbook.
  
  By the way, you left out Nathaniel and Superfly.
• Anonymous
  August 22, 2005
  Well one thing I know of is they are all constellations, I believe all of them are some form of greek mythology as well. I know Orion, Perseus, Cygnus are in Greek Mythology but Never Heard of Norma on any Greek Mythology I remember.
• Anonymous
  August 22, 2005
  Well, they're constellations all right. But Norma isn't based on Greek mythology. It is Latin for a right square, a carpenter's tool.
• Anonymous
  August 22, 2005
  The comment has been removed