[IMAGE: Fanciful portrait of Ptolemy] [IMAGE: Space shuttle in orbit]
You have reached the home page of a book-on-the-web, a coherent,
self-contained course at the high-school level, also suitable
for independent study, rich in history. A button at the end of each text
file brings you back here.
Its contents (full list further below) cover:

        Volunteer translators for this site and related ones--please contact me (below).
        Also, contact me with comments and questions
    . . .And if you are willing to become a collaborator, perhaps assume part of the responsibility for these web sites, please click here.

More Links:
An overview of this site and two sister sites:         http://www.phy6.org/readfirst.htm

    "Zip archive" compressed version   of this set (15Mb)
                                    http://www.phy6.org/stargaze.zip      (free download).

    Beyond science:         Welcome to my World, a diverse collection of writings.
        For easy reading, view with size 12-14 "Times" font (but print with size 10 or 12).

Of special interest to teachers:                   back to top

"From Stargazers to Starships" follows an earlier site "The Exploration of the Earth's Magnetosphere". "Stargazers" deals with the world of gravity--of massive planets and stars, and the way spaceflight is achieved despite their strong pull. "Exploration" on the other hand looks at the hot (but usually rarefied) gases which fill most of space, which are ruled by magnetic and electric forces rather than by gravity. The polar aurora, the radiation belts, the solar wind, magnetic storms, "space weather", cosmic radiation--this is the site which tells you all about them.

Author and Curator:   Dr. David P. Stern
     Greenbelt, Maryland                                 Mail to Dr.Stern:   stargaze("at" symbol)phy6.org .

Last updated: 2-25-2012