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August 29, 2011

Sunspot Change Recorded by SDO

NASA\’s Solar Dynamics Observatory (SDO) recorded how a sunspot group changed over a period of a couple of days. The images were produced by the Helioseismic and Magnetic Imager (HMI) instrument.

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Some of the books I have enjoyed

Giovanni Vulpetti, Les Johnson, Gregory L. Matloff - Solar Sails: A Novel Approach to Interplanetary Travel

Bradley C. Edwards, Eric A. Westling - The Space Elevator: A Revolutionary Earth-to-Space Transportation System

Gerard K. O'Neill - The High Frontier: Human Colonies in Space

Michael D. Griffin and James R. French - Space Vehicle Design, Second Edition

William Tyrrell Thomson - Introduction to Space Dynamics

Alan C. Tribble - The Space Environment - Implications for Spacecraft Design

Roger R. Bate, Donald D. Mueller, and Jerry E. White - Fundamentals of Astrodynamics

Peter C. Hughes - Spacecraft Attitude Dynamics

Vladimir A. Chobotov - Orbital Mechanics

Bernard Friedland - Control System Design - An Introduction to State-Space Methods

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Sunspot Change Recorded by SDO

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Some of the books I have enjoyed