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They recycled a lot of models and theme music for UFO. Some of the |
concepts even showed up in SPACE: 1999. |
Software engineering? That's like military intelligence, isn't it? |
Todays New York TImes just wrote about a pact being negotiated |
between us and the Russians to develope High Temperature |
Gas Cooled Fission Reactors using Re-Cycled Weapons Grade plutonium |
from Warhead stockpiles. THe fuel will be pelletized in ceramic |
for safety, and then after depletion will be sufficiently |
contaminated with by-products to make extraction of the remaining |
plutonium hazardous enough to deter re-use. |
Apparently the project will be led by General Atomics of San Diego |
with funding from the US GOvernment. THe pilot plant will be built |
and operated by the russians. |
pat |
In article <[email protected]>, [email protected] |
(Victor Laking) writes: |
> Does anyone have any info on the apparent sightings of Vulcan? |
> All that I know is that there were apparently two sightings at |
> drastically different times of a small planet that was inside Mercury's |
> orbit. Beyond that, I have no other info. |
The sightings were apparently spurious. There is no planet inside of |
the orbit of Mercury. |
The idea of Vulcan came from the differences between Mercury's observed |
perihelion precession and the value it should have had according to |
Newtonian physics. Leverrier made an extensive set of observations |
and calculations during the mid 19th century, and Simon Newcombe later |
improved on the observations and re-calculated using Leverrier's system |
of equations. Now Leverrier was one of the co-discoverers of Neptune |
and since he had predicted its existence based on anomalies in the orbit |
of Uranus his inclination was to believe the same sort of thing was |
afoot with Mercury. |
But alas, 'twere not so. Mercury's perihelion precesses at the rate |
it does because the space where it resides near the sun is significantly |
curved due to the sun's mass. This explanation had to wait until 1915 |
and Albert Einstein's synthesis of his earlier theory of the electrodynamics |
of moving bodies (commonly called Special Relativity) with Reimanian |
geometry. The result was the General Theory of Relativity, and one of |
it's most noteworthy strengths is that it accounts for the precession |
of Mercury's perihelion almost exactly. (Exactly if you use Newcomb's |
numbers rather than Leverrier's.) |
Of course not everybody believes Einstein, and that's fine. But subsequent |
efforts to find any planets closer to the sun than Mercury using radar |
have been fruitless. |
-Bill Gawne |
"Forgive him, he is a barbarian, who thinks the customs of his tribe |
are the laws of the universe." - G. J. Caesar |
Any opinions are my own. Nothing in this post constitutes an official |
statement from any person or organization. |
Archive-name: space/data |
Last-modified: $Date: 93/04/01 14:39:07 $ |
A wide variety of images, data, catalogs, information releases, and |
other material dealing with space and astronomy may be found on the net. |
A few sites offer direct dialup access or remote login access, while the |
remainder support some form of file transfer. Many sites are listed as |
providing 'anonymous FTP'. This refers to the File Transfer Protocol on |
the Internet. Sites not connected to the Internet cannot use FTP |
directly, but there are a few automated FTP servers which operates via |
email. Send mail containing only the word HELP to [email protected] |
or [email protected], and the servers will send you instructions |
on how to make requests. |
The sources with the broadest selection of material are the NASA Ames |
SPACE archive and the National Space Science Data Center. |
Don't even ask for images to be posted to the net. The data volume is |
huge and nobody wants to spend the time on it. |
The possible combinations of image formats and machines is forebodingly |
large, and I won't attempt to cover common formats (GIF, etc.) here. To |
read PDS and VICAR (and many other) formats on Unix systems running X, |
use XV 2.11, available by anonymous FTP from export.lcs.mit.edu |
(18.24.0.12) in contrib/xv-2.11.tar.Z and the other standard X11 FTP |
sites. |
The FAQ for the Usenet group alt.binaries.pictures discusses image |
formats and how to get image viewing software. A copy of this document |
is available by anonymous FTP from the Usenet FAQ archives at |
pit-manager.mit.edu (18.72.1.58), in directory |
pub/usenet/alt.binaries.pictures. |
Extensive archives are maintained at NASA Ames and are available via |
anonymous FTP or an email server. These archives include many images and |
a wide variety of documents including this FAQ list, NASA press |
releases, shuttle launch advisories, and mission status reports. Please |
note that these are NOT maintained on an official basis. |
FTP users should connect to ames.arc.nasa.gov (128.102.18.3) and look in |
pub/SPACE. pub/SPACE/Index contains a listing of files available in the |
archive (the index is about 200K by itself). |
To access the archives by email, send a letter to |
[email protected] (or ames!archive-server). In the |
subject of your letter (or in the body), use commands like: |
send SPACE Index |
send SPACE SHUTTLE/ss01.23.91. |
The capitalization of the subdirectory names is important. All are in |
caps. Only text files are handled by the email server at present; use |
one of the FTP email servers described in the introduction to this |
section for images or programs. |
The Magellan Venus and Voyager Jupiter, Saturn, and Uranus CD-ROM image |
disks have been put online in the CDROM and CDROM2 directories. The |
disks will be rotated on a weekly basis. Thousands of images are |
available in these collections. |
The GIF directory contains images in GIF format. The VICAR directory |
contains Magellan images in VICAR format (these are also available in |
the GIF directory). A PC program capable of displaying these files is |
found in the IMDISP directory (see the item "VIEWING IMAGES" below). |
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