accelerating galaxies

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From: Mark Lawton (markslawton@hotmail.com)
Date: Thu Apr 07 2005 - 09:38:57 PDT 

Message-ID: <BAY104-DAV23B9A0B0AFCD46D20755AA63E0@phx.gbl>
From: "Mark Lawton" <markslawton@hotmail.com>
Subject: accelerating galaxies
Date: Thu, 7 Apr 2005 09:38:57 -0700

Nathan,

In a very recent article of Scientific American the whole accelerating
universe issue is discussed nicely. I'd give the student that article to
read. He would likely enjoy it. I think the title was something like -
"Misunderstandings about the Big Bang"

I think it was probably Jan or Feb or Mar issue.

-Mark Lawton
Portland, Oregon

-----Original Message-----
From: pinhole@exploratorium.edu [mailto:pinhole@exploratorium.edu]
Sent: Thursday, April 07, 2005 12:20 AM
To: Pinhole Listserv
Subject: Pinhole Digest #1720 - 04/07/05

Pinhole Digest #1720 - Thursday, April 7, 2005

  Teaching Positions in Dallas, TX
          by "Kimberley Aso" <kaso@marin.marin.k12.ca.us>
  Accelerating galaxies?
          by "Nathan Castellanos" <normal@earthling.net>

----------------------------------------------------------------------

Subject: Teaching Positions in Dallas, TX
From: "Kimberley Aso" <kaso@marin.marin.k12.ca.us>
Date: Wed, 6 Apr 2005 12:13:38 -0700

Hey everybody,

I will (sadly) be moving to Dallas, Texas this summer and I am looking for a
middle
school science teaching position in either Dallas or the greater Dallas
area. Is
anyone familiar with the school districts? Any feedback would be
appreciated!

Kim Aso

Kimberley Aso
Physical Science 8
Miller Creek Middle School

________________________________________________________________
Sent via the WebMail system at marin.marin.k12.ca.us

 
                   

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Subject: Accelerating galaxies?
From: "Nathan Castellanos" <normal@earthling.net>
Date: Wed, 06 Apr 2005 22:09:48 -0700

I have a student in my physics class who likes to think about big things,
and today he asked me a question and I had no clue.

He said that he has seen on some TV specials or something that the galaxies
are accelerating away from each other, and that this remains largely
unexplained. He also noted that the fact that electrons seem to maintain
their orbital distance from the nucleus. He said this is strange because
perhaps they should be falling into it. He was wondering if it was somehow
possible that the electron clouds were really shrinking and we just didn't
notice it. And instead of accelerating the galaxies were just shrinking,
which makes it look like they are accelerating.

His theory doesn't seem to make sense, but I was unable to give him a
sensible reason. Any help would be appreciated.

Thanks,

Nathan Castellanos

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