From Stargazers to Starships
You have reached the homepage of a tutorial exposition focused on 3 topics:
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The material is self-contained, at the high-school level, rich in history and is
best studied in the order listed below.
You will find here:
Astronomy of the Earth's motion in space:1. The Sky Above Us
1a.Finding the Pole Star
2. The Path of the Sun, the Ecliptic
2a.Building a Sundial
3. Seasons of the Year
4. The Angle of the Sun's Rays 5. Latitude and Longitude
6. The Calendar
8. The Round Earth and Christopher Columbus
Distance to the Horizon
How Distant is the Moon?--1
How Distant is the Moon?--2
9, The central role of the Sun
9a.Aristarchus: Is Earth Revolving around the Sun?
9b.The Earth's Shadow
9c.Copernicus, Galileo, and the Discovery of the Solar System
10. Kepler and his Laws
11. Graphs and Ellipses
11a.Ellipses and Kepler's First Law
12. Kepler's Second Law
12a.How Orbital Motion is Calculated
Newtonian mechanics13. The Way Things Fall
16. Newton and his Laws
17a.Mass Measurements aboard Space Station Skylab
17b.Comparing Mass Without use of Gravity
18. Newton's Second Law
19. Motion in a Circle
20. Newton's theory of "Universal Gravitation"
21. Kepler's Third Law
21a.Applying Kepler's Third Law
22. Frames of Reference: The Basics
22a.The Aberration of Starlight
22b. Airplane Flight
23. Frames of Reference: The Centrifugal Force
24. Rotating Frames of Reference in Space and on Earth
Spaceflight and Spacecraft
25. The Principle of the Rocket
A Math RefresherHome page
Elements of algebra
(M-1) Basic ideas
Elements of trigonometry
Helpful MaterialQuestions and Answers by users of "Stargazers".
Hints to users.
A Glossary of Terms(Cross-linked, keyed to the text)
Timeline (A chronology).
Annotated Timeline (With added dates from history). .
Of special interest to teachers:
Author and Curator: David P. Stern
NASA/GSFC Code 695
Web Design: Conway Carter
Image Editing: Eddie Welker
Last updated: 14 July, 1999