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  Selected Sites   (see also All Sites in this category)

  1. National Aeronautics and Space Administration (NASA)
    Strategic Enterprises: Office of Aero-Space Technology; Human Exploration and Development of Space; Earth Science; Space Science. In particular, see NASA's resources for educators and for students, formerly organized under their Spacelink project. Links to other NASA sites (Hubble Space Telescope; Science News; Space Station; Deep Space 1) and an online newsletter, today@nasa.gov. more>>

  2. The Nine Planets, a Multimedia Tour of the Solar System - Bill Arnett
    An overview of the history, mythology, and current scientific knowledge, with descriptions and data, of each of the planets and moons in our solar system. Each page has text and images, some have sounds and movies, and most provide references to additional related information. To explore the solar system offline, visit The Nine Planets Bookstore. There are more than 50 mirror sites for the Nine Planets. The Nine Planets - For Kids is a special version for younger folks. more>>

  3. Orbits and Gravitation - MacTutor Math History Archives
    A hypertext essay covering Copernicus through Poincaré, Levi-Civita, and Birkhoff, with References. more>>

  4. Sloan Digital Sky Survey
    The astronomical surveys of the Sloan Digital Sky Survey (SDSS) have "obtained deep, multi-color images covering more than a quarter of the sky and created 3-dimensional maps containing more than 930,000 galaxies and more than 120,000 quasars." SDSS's education and outreach tools include the lessons, activities and games of SkyServer, appropriate for kids of all ages; World Wind, open source software that lets you zoom through the sky using the SDSS data set; COSMUS, which produces visualizations that explain scientific concepts and data; and Galaxy Zoo, which allows anyone to classify SDSS observations of galaxies. more>>

  5. Views of the Solar System - Calvin J. Hamilton
    A multimedia exploration of the Sun, planets, moons, comets, asteroids, meteorites, and more. Study the latest scientific information or the history of space exploration, rocketry, early astronauts, space missions, and spacecraft through an archive of photographs, scientific facts, text, graphics and videos. Historical, orbital, and physical data are provided for the Sun, planets, and satellites, and unusual terms are linked to and defined in the Glossary. A History of Space Exploration contains information about rocket history, early astronauts, space missions, and spacecraft, and provides detailed chronological tables of space exploration. Versions are available in English, Spanish, Portuguese, French, and German. more>>


 

Mason error

error in file:   /usr/lib/perl5/5.6.0/Carp/Heavy.pm
 
line 79:  Bizarre copy of HASH in aassign
context:  
... 
75:  # them according to the format variables defined earlier in
76:  # this file and join them onto the $sub sub-routine string
77:  if ($hargs) {
78:  # we may trash some of the args so we take a copy
79:  @a = @DB::args; # must get local copy of args
80:  # don't print any more than $MaxArgNums
81:  if ($MaxArgNums and @a > $MaxArgNums) {
82:  # cap the length of $#a and set the last element to '...'
83:  $#a = $MaxArgNums;
... 
component stack:   /library/branch.html
/library/dhandler
code stack:   /usr/lib/perl5/5.6.0/Carp/Heavy.pm:79

debug info:   Debug file is '/var/lib/mason/debug/anon/13'.

raw_error





























raw error:
 






























error while executing /library/branch.html:
Bizarre copy of HASH in aassign at /usr/lib/perl5/5.6.0/Carp/Heavy.pm line 79.