Welcome to Basics of Space Flight. The authors hope you'll enjoy and benefit from using this document. At the end, you'll be offered a certificate of completion that you can fill out and give your supervisor for inclusion in your training record.
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Except units of measure, abbreviated terms are spelled out the first time they are used. Thereafter, the abbreviations are generally used alone. They can all be found in the Glossary.
Units of Measure
Throughout this website, measurements are expressed in SI, the International System of Units (the modern metric system of measurement). You will find them all explained, along with a table of metric to English conversions, on the Units of Measure page, linked from the Menu Bar at the bottom section of each page.
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Editorial notes on the original document, the updates, the authors, acknowledgements, image credits, honors received, etc. appear on the EDITORIAL PAGE. There, you'll also find information on how to contact the author and the webmaster. Feedback to the author from readers is especially welcome. Be sure to let us know if you encounter any errors or broken links. Note: the "FEEDBACK" link at the bottom of the front page goes to the general JPL web administration, rather than directly to the Basics of Space Flight author.