M R wrote:
>
> 6 trillion miles (10 trillion km). Luckily they
> rounded 6 to 10, instead of saying precisely 9.6.
>
> http://story.news.yahoo.com/news?tmpl=story&u=/nm/20020424/ts_nm/space_universe_dc
>
> In the astronomical studies they say light year, the
> light is universal, but the year is based on earth's
> revolution and not universal.
>
> Can there be an unit of time which is independent of
> any celestial object. Also how do the people in space
> station calculate time when they get light all the
> time.
Madan, the answer to both of your questions is "the second, as defined
in the SI". In fact, the points you raise are part of the reason that we
went to "atomic time" (e.g., UTC) and stopped using celestial time
(e.g., GMT) as a standard.
Jim
--
Metric Methods(SM) "Don't be late to metricate!"
James R. Frysinger, CAMS http://www.metricmethods.com/
10 Captiva Row e-mail: [EMAIL PROTECTED]
Charleston, SC 29407 phone/FAX: 843.225.6789
