Talk:Sidereal year
From Wikipedia, the free encyclopedia
 |
This article is within the scope of WikiProject Time, an attempt to build a comprehensive and detailed guide to Time on Wikipedia. If you would like to participate, please join the project. |
| ??? | This article has not yet received a rating on the quality scale. |
| ??? | This article has not yet received a rating on the Project's importance scale. |
[edit] Question
Does anyone understand what " A true cycle will always compare two bodily objects that differ mathematically by exactly 1" means? I tried to tidy up the grammar without losing the sense. Strider52 | Talk 12:58, 1 March 2007 (UTC)
One is referring to the sun, the other to the stars. Since the earth goes around the sun it crosses the sky a different amount to the stars (ie different stars are above us at midnight each night of the year). Over a year this adds up to a difference of once across the sky, hence the year measured in solar days and the year measured in sidereal days differs by 1. If you look at the sidereal day page you will see that a sidereal day is shorter than a solar day for this reason.—Preceding unsigned comment added by 149.171.164.20 (talk) 06:10, 17 January 2008 (UTC)
