Re: serious question for book
From: N:dlzc D:aol T:com \(dlzc\) (net_at_nospam.com)
Date: 03/29/05
- Previous message: Gregory L. Hansen: "Re: Bad News for 'Moon Hoax' Buffs"
- In reply to: harry palmer: "Re: serious question for book"
- Messages sorted by: [ date ] [ thread ]
Date: Mon, 28 Mar 2005 19:10:02 -0700
Dear harry palmer:
"harry palmer" <rob@aol.com> wrote in message
news:50U1e.12043$ZB6.6706@newssvr19.news.prodigy.com...
>
> "Claus-J|rgen Heigl" <unea@rz.uni-karlsruhe.de> wrote in
> message
> news:d290tc$vd9$1@news2.rz.uni-karlsruhe.de...
>> harry palmer wrote:
...
>> > I am writing a book. On many occasions I have
>> > read that it is possible to determine the date
>> > from the stars. How does this work? How would
>> > you set up the stars configuration in a software
>> > program to give you this date ? Also could you
>> > determine where you were as well? My
>> > characters have been thrown back in time with
>> > a computer and they have no idea as to when
>> > or where, I'd like to be fairly accurate as to their
>> > capabilities and give a brief explanation as to how.
I would think you could duplicate some form of LLR off the Moon,
to get you near the epoch. Subtended size (or period) would have
to do before Apollo. It has been montonically receding from the
Earth, and the Length of Day has also been monotonically
increasing. Good for about 2 billion years.
Take the temperature of the CMBR, good back to about 270,000
years after the Big Bang. Radiant heat transfer to space on a
clear night got to 5 K, which is not a bad approximation...
David A. Smith
- Previous message: Gregory L. Hansen: "Re: Bad News for 'Moon Hoax' Buffs"
- In reply to: harry palmer: "Re: serious question for book"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
|
