Newsgroups: comp.robotics
Path: brunix!news.Brown.EDU!noc.near.net!howland.reston.ans.net!ux1.cso.uiuc.edu!moe.ksu.ksu.edu!mimbres.cs.unm.edu!intvax!loucks
From: loucks@isrc.sandia.gov (Cliff Loucks)
Subject: Re: Distance to Mars
Message-ID: <1993Jun16.203416.13079@isrc.sandia.gov>
Organization: Sandia National Labs, Org. 1600, Albq., NM
References: <1993Jun10.145007.12268@mksol.dseg.ti.com>
Date: Wed, 16 Jun 1993 20:34:16 GMT
Lines: 20

john r strohm (amoung others) writes:
> 
>At closest approach to Earth, Mars is roughly 30 million miles away,
>which works out to about 160 light-seconds.  At farthest, Mars is some
>200 million miles away, or about 1100 light-seconds, or about 20
>light-minutes away.

Just a little nit...

A light-year is a unit of distance; the distance light travels in a
year.  A light-second would then be a distance of 186,000 miles.

Light would take about 160 seconds to travel 30 million miles, while
160 light-seconds is a distance of 30 million miles.

Cliff
-- 

Cliff Loucks  <=>  loucks@isrc.sandia.gov
Sandia National Labs, Albuquerque, New Mexico
