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John S. Lewis

John S. Lewis is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand John S. Lewis rather than just read about it. In short: John S. Lewis (born June 27, 1941) is a Professor Emeritus of planetary science at the University of Arizona’s Lunar and Planetary Laboratory.

Key takeaways

  • John S. Lewis belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect John S. Lewis to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of John S. Lewis from memory before moving on to harder problems.

Reference excerpt

John S. Lewis (born June 27, 1941) is a Professor Emeritus of planetary science at the University of Arizona’s Lunar and Planetary Laboratory. His interests in the chemistry and formation of the Solar System and the economic development of space have made him a leading proponent of turning potentially hazardous near-Earth objects into attractive space resources.

Career The son of John Simpson Lewis, a YMCA professional, and Elsie Dinsmore Vandenbergh, a school teacher. Lewis received his B.S. in chemistry from Princeton University in 1962 as a National Merit Scholar. He then continued his education at Dartmouth College receiving his M.A. in inorganic chemistry in 1964. He received his Ph.D in geochemistry and cosmochemistry from University of California, San Diego in 1968, where he studied under Harold Urey. Prior to joining the University of Arizona, Lewis taught space sciences and cosmochemistry at the Massachusetts Institute of Technology. An expert on the composition and chemistry of asteroids and comets, Lewis has written such popular science books as Rain of Iron and Ice and Mining the Sky: Untold Riches from the Asteroids, Comets, and Planets. Lewis is a frequent commentator on the Chinese network CCTV when China broadcasts its major missions live. He was a member of the Board of Directors of American Rocket Company and is currently Chief Scientist at Deep Space Industries. Raised a Presbyterian, Lewis became a Mormon, in 1980. In February 2013, Lewis assumed the role of Chief Scientist for the firm Deep Space Industries. Lewis focuses on strategic planning, mission development and processing concepts for Deep Space.

Publications Lewis, John S.; Prinn, Ronald G. (1984). Planets and Their Atmospheres: Origin and Evolution. Academic Press. ISBN 0124465803. Lewis, John S.; Lewis, Ruth A. (1987). Space Resources: Breaking the Bonds of Earth. Columbia University Press. ISBN 0231064985. Lewis, John S.; Matthews, Mildred Shapley (1993). Resources of Near-Earth Space. University of Arizona Press. ISBN 0816514046. Lewis, John S. (1995). Physics and Chemistry of the Solar System. Elsevier Science. ISBN 0124467407. Lewis, John S. (1996). Rain of Iron and Ice: The Very Real Threat of Comet and Asteroid Bombardment. Basic Books. ISBN 0201489503. Lewis, John; Lewis, Professor John S. (1997). Mining the Sky: Untold Riches from the Asteroids, Comets, and Planets. Basic Books. ISBN 0201479591. Lewis, John S. (1998). Worlds Without End: The Exploration of Planets Known and Unknown. Basic Books. ISBN 0738200115. Lewis, John S.; Lewis, Professor John S. (2000). Comet and Asteroid Impact Hazards on a Populated Earth: Computer Modeling. Academic Press. ISBN 0124467601. Lewis, John S. (2014). Asteroid mining 101: wealth for a new space economy. Deep Space Industries Incorporated. ISBN 978-0-9905842-0-9.

See also Marshall Savage - author of The Millennial Project: Colonizing the Galaxy in Eight Easy Steps Gerard O'Neill - author of The High Frontier: Human Colonies in Space James Benson - founder of the SpaceDev company The Case for Mars: The Plan to Settle the Red Planet and Why We Must by Robert Zubrin Engines of Creation by K. Eric Drexler Asteroid 3554 Amun

References

External links John Lewis's web page at the University of Arizona. Personal blog The Extraterrestrial Commodities Market airspacemag.com

Worked examples

Example 1 — a first encounter with John S. Lewis

Start with the simplest possible case. Write down what John S. Lewis claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to John S. Lewis before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about John S. Lewis ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of John S. Lewis

In research
John S. Lewis appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses John S. Lewis in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
John S. Lewis is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1941 births, American geochemists, American planetary scientists, so understanding it makes those chapters shorter.
In everyday life
Look for John S. Lewis outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study John S. Lewis in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what John S. Lewis means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain John S. Lewis out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John S. Lewis in simple terms?

John S. Lewis (born June 27, 1941) is a Professor Emeritus of planetary science at the University of Arizona’s Lunar and Planetary Laboratory.

Why does John S. Lewis matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study John S. Lewis?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on John S. Lewis.

Tags

  • 1941 births
  • American geochemists
  • American planetary scientists
  • American science writers
  • Asteroid mining
  • Astrogeologists
  • Dartmouth College alumni
  • Living people
  • MIT School of Science faculty
  • Princeton University alumni
  • Scientists from Arizona
  • Scientists from New Jersey

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