Physics and Astronomy Labs/Celestial sphere

Sandbox 1  Sandbox 2  Sandbox 3 [1]

Wikimedia links edit

Top external links on Google edit

  1. Wikipedia:Celestial sphere is #1 on Google today
  4. Great pictures
  7. 2'46'' time duration
  8. Wikibooks is a sister to Wikipedia and Wikiversity
  9. UNL hosts the best astronomy lab materials I know about.

Gallery (commons) edit

These images on Wikimedia Commons are subject to minimal copyright restrictions.

Gallery notes:

  1. Curvilinear coordinates can be used in situations where Euclidean geomotry is not valid, as is the case with our universe due to gravity and general relativity
  2. An artists attempt to show how gravity violates space-time

Footnotes edit

  1. To open a sandbox, click and edit. Don't delete other people's work. See your instructor if you want to register as an editor (Wikipedia will never bother you unless you sign up for the email alert. And the alerts are never promotional items of any sort.