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From: rjnoe@riccb.UUCP (Roger J. Noe)
Newsgroups: net.space
Subject: Re: Re: Altitude of "space"
Message-ID: <615@riccb.UUCP>
Date: Wed, 15-Jan-86 18:07:16 EST
Article-I.D.: riccb.615
Posted: Wed Jan 15 18:07:16 1986
Date-Received: Fri, 17-Jan-86 01:51:32 EST
References: <8512312026.AA15784@s1-b.arpa> <70@dg_rtp.UUCP> <1274@sdcsvax.UUCP> <1287@sdcsvax.UUCP> <2553@amdahl.UUCP>
Distribution: net
Organization: Rockwell International - Downers Grove, IL
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> So just how far does one have to go to reach 'space'?
> -- 
> E. Michael Smith  ...!{hplabs,ihnp4,amd,nsc}!amdahl!ems

Many pilots unofficially recognized 50 (statute) miles as the beginning of
space, i.e. beyond the atmosphere.  This would make a number of X-15 missions
space flights.  A more common recognition today is an altitude of 100 km
(about 62 statute miles).  Still some of the X-15 flights were above this
mark.  There is no universally accepted definition since there is no real
boundary to cross to get to space.
--
	Roger Noe			ihnp4!riccb!rjnoe