Re: [Utah-astronomy] useless facts
Never? ----- Original Message ----- From: "Spencer Ball" <spencer@spencerball.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Thursday, December 23, 2010 1:27:05 PM Subject: Re: [Utah-astronomy] useless facts We'll never see past the cosmic microwave background, much less see light from clear all the way around. Spencer Ball -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of sfisher01@comcast.net Sent: Thursday, December 23, 2010 1:12 PM To: utah-astronomy@mailman.xmission.com Subject: [Utah-astronomy] useless facts I read this on the usless facts gadget on my desktop. I'm not sure I understand it. Care to comment? A sunbeam setting out through space at the rate of 186,000 miles a second would go in a gigantic circle and return to its origins after about 200 billion years. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
It also brings up the concept that space/time is curved. --- On Thu, 12/23/10, sfisher01@comcast.net <sfisher01@comcast.net> wrote: From: sfisher01@comcast.net <sfisher01@comcast.net> Subject: Re: [Utah-astronomy] useless facts To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Date: Thursday, December 23, 2010, 1:43 PM Never? ----- Original Message ----- From: "Spencer Ball" <spencer@spencerball.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Thursday, December 23, 2010 1:27:05 PM Subject: Re: [Utah-astronomy] useless facts We'll never see past the cosmic microwave background, much less see light from clear all the way around. Spencer Ball -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of sfisher01@comcast.net Sent: Thursday, December 23, 2010 1:12 PM To: utah-astronomy@mailman.xmission.com Subject: [Utah-astronomy] useless facts I read this on the usless facts gadget on my desktop. I'm not sure I understand it. Care to comment? A sunbeam setting out through space at the rate of 186,000 miles a second would go in a gigantic circle and return to its origins after about 200 billion years. _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
If Hubble's constant is approx. 70 km/sec per megaparsec, then space is being created by that amount between objects. If the visible universe is approx 50 billion light years across, which is the smallest that the universe can be, then all the way around would be approx 50 billion light years or approx 15 billion parsecs. Applying Hubble's constant would mean that an object would have to go 70 km/sec per megaparsec times 15,000 megaparsecs, = 1,050,000 km/sec, which is about three times the speed of light just to keep up with the rate the universe is expanding--without getting any closer to the target at all. And the expansion is accelerating. Better if the sunbeam were lost in circles. Spencer Ball -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Patrick Sent: Thursday, December 23, 2010 5:38 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] useless facts Or maybe it's just that the sunbeam was male, got lost, refused to ask directions, and ended up going in circles. :) patrick On 23 Dec 2010, at 15:31 , M Wilson wrote:
It also brings up the concept that space/time is curved.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
Ding, ding, ding We have a winner, no more phone calls please. ----- Original Message ----- From: "Patrick" <paw@wirelessbeehive.com> To: "Utah Astronomy" <utah-astronomy@mailman.xmission.com> Sent: Thursday, December 23, 2010 5:37:49 PM Subject: Re: [Utah-astronomy] useless facts Or maybe it's just that the sunbeam was male, got lost, refused to ask directions, and ended up going in circles. :) patrick On 23 Dec 2010, at 15:31 , M Wilson wrote:
It also brings up the concept that space/time is curved.
_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com
Too funny, Patrick. I am jealous because I wish I had thought of it! 73, lh (damn the ding, ding, dings; full speed ahead) On 12/23/2010 5:37 PM, Patrick wrote:
Or maybe it's just that the sunbeam was male, got lost, refused to ask directions, and ended up going in circles. :)
patrick
participants (5)
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Larry Holmes -
M Wilson -
Patrick -
sfisher01＠comcast.net -
Spencer Ball