Miscellaneous
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Revision as of 19:05, 7 November 2008 by 18.75.3.101 (Talk)
Questions that really don't belong in any category, even a new one... Scales:
- What are the masses and radii of the following objects: electron, proton, earth, sun, solar system, globular cluster, open cluster, galaxy cluster.
- What is the spatial extent of the visible universe?
- If we go out at a clear night, how many stars can we see with naked eyes?
- What is Vega?
- What is the Cygnus loop?
- How would you define "strong gravity"?
- What do you know about planetary nebulae? What is their extent?
- What is the mean local sidereal time at midnight on March 20th?
